What expression is equivalent to 18,090?

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

i think the answer is c sorry if it's wrong

6-3=3

3*3=9

9+12=21

21/3=7

7*8=56

56 is your answer

well, if it's triangular garden, the triangle could represent the garden.