Answer:
6 hours
Step-by-step explanation:
Let
x----> the number of hours worked at the donut shop
y----> the number of hours worked at the school bookstore
we know that
x+y=20
x=20-y -----> equation A
10.25x+8.75y=196 -----> equation B
Substitute equation A in equation B and solve for y
10.25(20-y)+8.75y=196
205-10.25y+8.75y=196
10.25y-8.75y=205-196
1.5y=9
y=6 hours at the school bookstore
F(x) - g(x) = -2x^3 - 6x^2 + 9x
Answer:
5
Step-by-step explanation:
-28 because if you add 8 to -120 you get -112 then divide it by 4 and you got -28
