Asked by nonononono

Use the function rule f(x)=4x-4x-7. Find each output.

14. f(3)

16. f(-5)
Answered by Steve
#14. For each x, place a 3.
f(3) = 4*3-4*3-7 = -7
Same way for #16

However, I suspect a typo, since 4x-4x-7 = -7 for any value of x.