Answer:
c
Step-by-step explanation:
Answer:
likely .
Step-by-step explanation:
The equation is for when you compound annually is

A=future amount
P=initial amount or principal
r=interest rate in decimal form
t=time in years
so
A=A
P=3500
r=7.5%=0.075
t=13


use your calculator
A=8961.4457
round to nearest dollar
A=$8961
that's how much the investment will be worth after 13 years
30/5 is 6, so c/3 is 6, and c is 6x3, so c is 18.