Answer :
If you contribute $8,000 every year for 5 years, the interest would you would earn during the 5 years is:6005.91
What is future value of annuity?
The future value of the annuity means the future worth of 5 annual contributions of $8000 every year, based on the fact that the deposits would earn 7.0% interest rate every year, in short, the worth of the savings in 5 years can be determined using the future value of an ordinary annuity as shown below:
FV=PMT*(1+r)^N-1/r
FV=accumulate balance after 5 years=unknown
PMT=annual savings=$8,000
r=interest rate per year=7.0%
N=number of annual payments over 5 years=5
FV=$8000*(1+7.0%)^5-1/7.0%
FV=$46,005.91
Total deposits in 5 years=$8000*5=$40,000
Interest =FV-total deposits
interest=$46,005.91-$40,000
interest=$6,005.91
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