Sam put 2,000 in a savings account at his bank. after 10 years, his account balance was 4,000. the interest rate on the savings deposit is blank percent

The formula is

A=p (1+r)^t

A future value 4000

P present value 2000

R interest rate?

T time 10 years

4000=2000 (1+r)^10

Solve for r

4000/2000=(1+r)^10

(4000/2000)^(1/10)=1+r

R=(4,000÷2,000)^(1÷10)−1

R=0.07177×100

R=7.177%

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.