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3 years ago

Given ƒ(x) = −2x − 12, find x when ƒ(x) = 20.

Mathematics

2 answers:

ANTONII [103]3 years ago

6 0

Answer:

Step-by-step explanation:

ƒ(x) = -2x - 12

f(20) = -2(20) - 12

= -40 - 12

= -52

Morgarella [4.7K]3 years ago

5 0

Answer:

-16

Step-by-step explanation:

f(x)= -2x - 12

20= -2x- 12

20= -2x

+12

32=-2x

32=x

÷-2

-16=x

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