Answer:
C I think. Sorry if it's incorrect but I pretty sure it isn't.
Verified
Step-by-step explanation:
Use , and
LHS==RHS
A
f(x) - g(x)
= x² - 8 - (4 - x) ← distribute parenthesis by - 1
= x² - 8 - 4 + x ← collect like terms
= x² + x - 12 → A
$240.00 is the monthly interest