Kira opened a savings account with $9000 and was paid simple interest at an annual rate of 3%. When Kira closed the account, she was paid $1620 in
interest. How long was the account open for, in years?
If necessary, refer to the list of financial formulas.

Answers

Answer 1

Answer:

5.6 years

Step-by-step explanation:

N =  A (1 + increase) ^n

Where N is future amount, A is initial amount, increase is percentage increase/decrease, n is number of mins/hours/days/months/years.

if the amount of interest was 1620, then she had a total of 9000 + 1620

= 10 620.

10 620 = 9000 (1 + 0.03)^n

(1 + 0.03)^n = 10620/9000 = 1.18.

take logs for both sides:

log (1.03)^n = log 1.18

n log (1.03) = log 1.18

n = ( log 1.18)/ log (1.03)

= 5.6 years


Related Questions

math question file down below

Answers

30 + 2(n)

30 + 2(10) = $50

30 + 2(18) = $66

30 + 2(24) = $78

Liliana watched 1/2 of Finding Nemo before she paused it to go make popcorn. When she came back, she watched another 1/3 of the movie. What fraction of the movie did Liliana watch in all?

Answers

Answer:

5/6 of the movie. 1/2 is the same as 3/6 and 1/3 the same as 2/6. Just add it and boom you got 5/6.

46x = 138??

14x = 42?

8x = 32?

8x = 6?

18x = 234?

Answers

Answer:

ok here we go

Step-by-step explanation:

i dont know this one but an easy was to get all of your answers is to search up something like exponent calculator and i use sights like mathpapa and caculator soup soo good luck

NO WRONG ANSWERS !!! Evaluate 501 × 502​

Answers

Answer:

251,502

Step-by-step explanation:

hope it helps!

....

Answer:

501 × 502 = 251,502

...

Clara states that r 2 1 5r 1 3r is an equivalent expression to 9r. Why is Clara’s statement incorrect? Choose all that apply. A The expression r 2 1 5r 1 3r simplifies to r 2 1 8, which is not equivalent to 9r. B When you substitute 1 for r in both expressions, r 2 1 5r 1 3r has a value of 10 and 9r has a value of 9. These values are not equal. C The expression r 2 1 5r 1 3r simplifies to 10r, which is not equivalent to 9r. D When you substitute 2 for r in both expressions, r 2 1 5r 1 3r has a value of 20 and 9r has a value of 18. These values are not equal. E When you substitute 4 for r in both expressions, r 2 1 5r 1 3r has a value of 48 and 9r has a value of 36. These values are not equal. F The expression r 2 1 5r 1 3r simplifies to r(r 1 8), which is not equivalent to 9r.

Answers

Answer: A and D

Step-by-step explanation: I got it right

Three calculators cost as much as seven mugs. Each calculator costs $12 more than each mug. What is the cost of one mug?

Answers

Answer:

3.60

Step-by-step explanation:

3c=7m

c=m+12 solve for m

To obtain the value of one unknown quantity linear equation in one variable can be formed. The cost of one mug is given as $21.

What is a Linear equation?

A linear equation is a equation that has degree as one.

To find the solution of n unknown quantities n number of equations with n number of variables are required.

Given that,

The cost of 3 calculators = The cost of 7 mugs.

The cost of each calculator is $12 more than each mug.

Suppose, cost of each mug be x.

And, cost of each calculator is x + 12.

As per the question the following equation can be made,

7 ×(x + 12) = 3x

=> 7x - 3x = 84

=> 4x = 84

=> x = 21.

Hence, the cost for one mug is $21.

To know more about linear equation click on,

brainly.com/question/11897796

#SPJ5

4sinA+3cosA=5
help me.... ​

Answers

Answer:

4sinA+3cosA=5 look at this answer.sorry if wrong.i am not sure.

Answer:

masamstha 31 deleted account is correct hope it's help you have a great day ☺☺

Find C:
x2 + 10x + c

Answers

Answer:

25

Step-by-step explanation:

Answer:

The answer is 25

Step-by-step explanation:

Use the formula (b/2)^2 in order to create a new term in order to find the perfect square trinomial.

Hoped this helped!

Me pueden ayudar porfis no entiendo

¿Cuantos triangulos tiene un eneagono? ​

Answers

Answer:

un eneagono tiene 9 triángulos

Write a linear equation that gives the rule for this table.
Hint: Linear Functions are of the form y=mx+b

Answers

Answer:

y=x

Step-by-step explanation:

If we look at this then this is a y=mx+b graph

first lets find the rise/run

so rise = how much it goes up and run = how much it goes right or left

the rise/run of this graph is 1 because each time it goes one up it goes one right.

B= y intercept and the y intercept is 0

So it is y=1x+0 or y=x

answer = y=x

please help this is for a grade

Answers

Answer:

8.91

Step-by-step explanation: I hope this helps, I used my calculator to solve this for you, it is too complicated to explain.

Answer:

Step-by-step explanation:

((4x2.76)-1)÷2=5.02

find 6 ,7,8,9
WILL GIVE BRAINLIST!!!!​

Answers

Answer:

es un ángulo de 80

For the equation 4(x - 2) = 4x + K which value of k will create an equation with no solutions?

Answers

Step-by-step explanation:

k=8 that is the equation with no solutions

asdfruhyhkijgfdsafuhyfjtfrdef

Answers

Answer:

Epic

Step-by-step explanation:

stop random spam(thanks for points xD)


[tex] {x}^{3} - 3 {x}^{2} + x - 3[/tex]
how do I solve for x?​

Answers

Answer:(x−3)(x^2+1)

Step-by-step explanation:

Select the correct answer.
What is the simplified form of V45?
OA. 15
OB. 19.5
O c. 35
OD. 53

Answers

Answer:

C. 3√5

Step-by-step explanation:

45 = 3 × 3 × 5 considering this the answer is C

Answer:

c

Step-by-step explanation:

what is 15% of 80? use an equation to solve.​

Answers

Answer:

12

15. percent *80 =

(15.:100)*80 =

(15.*80):100 =

1200:100 = 12

Now we have: 15. percent of 80 = 12

Percentage solution with steps:

Step 1: Our output value is 80.

Step 2: We represent the unknown value with

Step 3: From step 1 above

Step 4: Similarly

Step 5: This results in a pair of simple equations:

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

Step 7: Again, the reciprocal of both sides gives

Step-by-step explanation:

Hope it is helpful....

Find the area of this obtuse triangle​

Answers

The correct answer is 49!

la altura del muro en el que se encuentra el tanque es:​

Answers

Answer:

3m•sen(60°) es la respuesta

What is 10000000000000000000000000000 + 20000000000000000000000000000

Answers

Answer:

3x10^28 OR 30000000000000000000000000000

1/4 of the soda was left. If you wanted to split the soda equally to 5 people, how much soda will each person get?

Answers

Answer:

1/20 of the soda

Divide 15 by v. Then, subtract 7.
Which of the following expressions matches the statement above?
OA 15 = V-7
OB. 15 = (1-7)
OC. 15 = (v-7)
OD. V=15-7

Answers

A is the correct answer

hope that helps:)

Answer:

A 15/V-7

Step-by-step explanation:

Hey It's Chloe again, sorry.
But what is the perimeter of a rectangle?

Answers

Answer:A perimeter is the sides of a shape added together.

Step-by-step explanation:

Answer:

The perimeter of a rectangle is the total length of all the sides of the rectangle.

Step-by-step explanation:

The perimeter of a rectangle is the total length of all the sides of the rectangle. We can find the perimeter by adding all four sides of a rectangle. Since opposite sides of a rectangle are always equal, we need to find the dimensions of only two sides to find the perimeter of a rectangle.

If you have a 2 inches by 4 inches rectangle, you would have 2 inches + 4 inches + 2 inches + 4 inches = 12 inches

Write the equation in point-slope form given the following information: f(3)=7 and f(8)=17

Answers

Answer:

Point-slope is the general form y-y₁=m(x-x₁) for linear equations. It emphasizes the slope of the line and a point on the line (that is not the y-intercept).

Step-by-step explanation:

Brainly needs at least 20 characters.

What is the distance between (7, 9) and (-4, 9)

Answers

Answer:

11 unites

Step-by-step explanation:

Can someone help me please

Answers

Answer:

height of b = 280

Step-by-step explanation:

candle b has a height of 280 - 5t, when it comes out of the mold then t=0 so the initial height of b is 280

candle b's height drops by 5 every hour (that's what the -5t part means)

candle a started at 216 and dropped to 192 in 3 hours, so it dropped by 24 in 3 hours so it drops 8 each hour

so candle b starts out taller (280 v. 216) and candle b burns slower (a at 8 per hour and b at 5 per hour), so b will never 'catch up' with a... candle a will be burned out while candle b is still burning

1.0000÷16
solution pls pls help me ​

Answers

Answer:

0.0625

Step-by-step explanation:

!!!!!PLEASE HELP MEEEEE!!!!!

Answers

Answer:

c hehhe

Step-by-step explanation:

Tracy purchases cotton candy in a ratio of 2 pink to 7 blue to sell at a carnival. She has a total of 108 bags. How many bags of each color does she have?

Answers

Answer:

24 pink

84 blue

Step-by-step explanation:

2 + 7 =9

2/9 = x/108

108 ÷ 9 = 12

12 × 2 =24

24 pink

7/9 = x/108

108÷9 = 12

12 ×7 =84

84 blue

Simon wants to find out which shop has the best frozen fruit drink in town. How could Simon conduct a survey with a sample that is representative of the population

Answers

Answer:

Step-by-step explanation:

The best way to do this would be to choose a random number of individuals that have bought a frozen fruit drink to survey. Then this same number of individuals should be surveyed in every single shop in the town. This would allow you to gather data from all of the shops and make sure that the sample is completely representative of the population as long as the individuals are chosen completely at random without introducing any external bias to the choice.

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