Find x if f (x) = 2x + 7 and f (x) = - 1.

5

-3

-4

Question

Mathematics

Markus Newman

27 July, 15:19

Find x if f (x) = 2x + 7 and f (x) = - 1.

5

-3

-4

+2

Answers (2)

Know the Answer?

Damian Townsend · Answer 1

F (x) is - 1 which means x is - 1 so you times 2 x - 1 and that is - 2 then you add - 2+7 which is 5. so your answer would be 5

Estrella Martin · Answer 2

x = - 4

Step-by-step explanation:

Start by replacing f (x) with - 1.

-1 = 2x + 7

Then subtract 7 on both sides of the equation and add like terms.

-8 = 2x

Then divide 2 on both sides of the equation and solve.

-4 = x

Find x if f (x) = 2x + 7 and f (x) = - 1.5-3-4

Find x if f (x) = 2x + 7 and f (x) = - 1.

5

-3

-4