f(x) = 8x-9
f(4)
let x=4 and substitute in
f(4) = 8*4 -9
f(4) = 32-9
f(4) = 23
FORMULA: AREA = LENGTH X WIDTH
with this we can proceed so the area is 20
the length is 40 inches and
answer is : width ----18.94---
I believe the two fractions are the numbers they all have in common.
