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Alborosie
3 years ago
5

Plzzzz help

Mathematics
1 answer:
nydimaria [60]3 years ago
8 0

Answer:

<h2>1) C.) -11</h2><h2>2) C.) 8x² + 12x</h2><h2>3) B) -11</h2>

Step-by-step explanation:

1)

f(x) = x + 4

f(3) = 3 + 4 = 7

g(x) = 12x - 6

g(-1) = 12(-1) - 6 = -12 - 6 = -18

f(3) + g(-1) = 7 + (-18) = -11

2)

f(x) = 2x + 3, g(x) = 4x

f(x) · g(x) = (2x + 3)(4x)             <em>use the distributive property</em>

f(x) · g(x) = (2x)(4x) + (3)(4x)

f(x) · g(x) = 8x² + 12x

3)

f(x) = 2x - 3

f(2) = 2(2) - 3 = 4 - 3 = 1

g(x) = 4x

g(3) = 4(3) = 12

f(2) - g(3) = 1 - 12 = -11

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