Question

Given f(x)=8x+12, find and simplify the following:
Please write formulas as

34x2+2x+1x−1−12
in the format:

3x^2/4+2(x+1)/(x-1)-1/2.



(a) f(9)=



(b) f(−4)=



(c) f(4x)=



(d) 3f(x)=



(e) f(−x)=



(f) f(x−4)=



(g) f(x)−4=


many thanks :)

Answer 1

I thought we had taken care of this already
Surely by the time you're in precal you know how to use the distributive property ...
f(x)=8x+12

f(-x) = 8(-x)+12 = -8x+12
f(x-4) = 8(x-4)+12 = 8x-32+12 = 8x-20
f(x)-4 = 8x+12-4 = 8x+4