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

6

48

14

8

Question

Mathematics

Eleanor Wells

9 May, 11:07

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

6

48

14

8

+2

Answers (1)

Know the Answer?

Liliana · Answer 1

So since we are solving for x, put 20 instead of f (x):

20 = 2 (x + 4)

You can distribute 2 to x and 4:

20 = 2x + 8

Subtract both sides by 8:

12 = 2x

Divide both sides by 2

6 = x

Given the function f (x) = 2 (x + 4), find x if f (x) = 20.648148

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

6

48

14

8