Let f (x) = - 3x - 4 and g (x) = 2x - 6. Find (f * g) (-7)

A. - 20

B. 56

C. 28

D. 17

Question

Mathematics

Scarlet

14 May, 10:38

Let f (x) = - 3x - 4 and g (x) = 2x - 6. Find (f * g) (-7)

A. - 20

B. 56

C. 28

D. 17

+5

Answers (1)

Know the Answer?

Arnie · Answer 1

Answer: B: 56

Step-by-step explanation: First find f (g (x)). Where f (x) = - 3x-4 and

g (x) = 2x-6. Replace X in f (x) with the equation for g (x)

f (g (x)) = - 3 (2x-6) - 4. Then use the foil method and simplify.

= - 6x+18-4

=-6x+14

Now sub. in the value of x with - 7 and evaluate.

=-6 (-7) + 14

=42+14

=56

Let f (x) = - 3x - 4 and g (x) = 2x - 6. Find (f * g) (-7)A. - 20B. 56C. 28D. 17

Let f (x) = - 3x - 4 and g (x) = 2x - 6. Find (f * g) (-7)

A. - 20

B. 56

C. 28

D. 17