For every of an hour that the turtle is crawling, he can travel of a mile. at what unit rate is the turtle crawling?

if you was gonna solve for a, a is a   < -12

i think the answer is b

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