Question

Given f (x) = 10 minus 2 x, find f(7).

Answer 1

Answer: X= 3/2

Explanation:

y=10-2x

then plug in the 7 for f(x) so,

7=10-2x

subtract the 10 from both sides

-3=-2x

divide -2

answer x=3/2

Answer 2

f(7) = - 4

Explanation:

To evaluate f(7) substitute x = 7 into f(x)

f(7) = 10 - 2(7) = 10 - 14 = - 4