$79500
step-by-step explanation:
a and d
soo this can be solve by using the formula:
f = p( 1 + i)^ n
where f is the future profit
p is the initial profit
i is the percent increase
n is the number of years
a . f = 30000 ( 1.05)^n
b. f = 30000 ( 1.05)^15
f = $62,368