Question

Given the function f(x) = −2x + 4, find x if f(x) = 20.

Answer 1

-8=x

Answer 2

Need me to show you how I did it?

Answer 3

f(x) = -2x+4


20 = -2x+4 ... replace f(x) with 20


Now solve for x

Answer 4

Or that.

Answer 5

` yes please help me , thanks

Answer 6

f(x) = -2x+4

20 = -2x+4

20-4 = -2x+4-4

16 = -2x

16/(-2) = (-2x)/(-2)

-8 = x

x = -8