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2 years ago

Given f(x) = -2x– 9x + 7, what is the value of f(-3)?

Mathematics

2 answers:

RSB [31]2 years ago

6 0

Answer:

Step-by-step explanation:

Y =

y=−2x−9x+7

Y = −11x+7

_________________________

X =

Let's solve for x.

y=−2x−9x+7

−11x+7=y

−11x+7+−7=y+−7

−11x=y−7

-11x/11 = y-7/-11

X = -11x/11 = y-7/-11

Kamila [148]2 years ago

3 0

Answer:

f(- 3) = 40

Step-by-step explanation:

To evaluate f(- 3), substitute x = - 3 into f(x), that is

f(- 3) = - 2(- 3) - 9(- 3) + 7 = 6 + 27 + 7 = 40

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