Answer
Total amount earned after 16 years = $93649
Explanation:
The principal, P = $50,000
Interest rate, r = 4% = 4/100
r = 0.04
The time, t = 16 years
Number of times intesrest is compounded per year, n = 1
Total amount is calculated below:

Total amount earned after 16 years = $93649
Answer is 74. Greater than 70 less than 80 so some where in the 70s. It has 4 ones so it would be 74.