Answer:
it would be 12
Step-by-step explanation:
area = 100 inches^2
width = x
length = 4x
x + x + 4x + 4x = 50
10x = 50
x = 5
width = 5
length = 4 × 5 = 20
area = length x width
= 20 x 5 = 100
I am not sure if you should + or - but i got the answer with the - is a decimal 1.5
The answer is f(5) = -1
