Question

Jacob invested $300 in a savings account and earned $81 in interest at the end of 9 years.

What was the interest rate?

A.
3%

B.
3.5%

C.
4%

D.
4.5%
@IQ250

Answer 1

Use the formula:

I = prt

81 = (300)(9)r

Multiply 300 * 9

Answer 2

2700

Answer 3

Yes, so we have:

81 = 2700r

Now we divide 2700 to both sides, what's 81 / 2700?

Answer 4

0.03

Answer 5

hello

Answer 6

Yes, now multiply by 100

Answer 7

3

Answer 8

Yes, so our answer is 3%.

Answer 9

thxs one more i think