Answer:
-4
Step-by-step explanation:
(-6)(2)-4(-1)(2)
(-12)-(-8)
-12+8=-4
5m-n
Just replace m with 4 and n with 9
5(4)-9=20-9=11
Answer:
I think in a function of f(x) P is also another variable like P is the price then Q is the quantity.
Step-by-step explanation: