if f(x) = 9 + 3x, find f(-2).
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a- -24
b- -3
c- 3
d- 4

From the given function, the value of f(-2) is 3. The correct option is C- 3

From the question, the given function is f(x) = 9 + 3x

To determine the value of f(-2), we will put x = -2 and then evaluate,

From the given function

f(x) = 9 + 3x

Put x = -2

Then, we get

f(-2) = 9 + 3(-2)

f(-2) = 9 + (3× -2)

f(-2) = 9 + (-6)

Then,

f(-2) = 9 + -6

(NOTE: +×- = -)

f(-2) = 9 - 6

f(-2) = 3

Hence, from the given function, the value of f(-2) is 3. The correct option is C- 3

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f

step-by-step explanation:

f

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)