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dem82 [27]
2 years ago
5

If f(x) = x + 8 and g(x) = –4x – 3, find (f + g)(x).

Mathematics
2 answers:
Soloha48 [4]2 years ago
6 0

Answer:

\huge\boxed{\sf (f + g)(x) = -3x + 5}

Step-by-step explanation:

<h3><u>Given functions:</u></h3>
  • f(x) = x + 8
  • g(x) = -4x - 3
<h3><u>Solution:</u></h3>

Add both functions

(f + g)(x) = x + 8 + (-4x - 3)

(f + g)(x) = x + 8 - 4x - 3

(f + g)(x) = x - 4x + 8 - 3

(f + g)(x) = -3x + 5

\rule[225]{225}{2}

Alecsey [184]2 years ago
5 0

Answer:

B

Step-by-step explanation:

(f + g)(x)

= f(x) + g(x)

= x + 8 - 4x - 3 ← collect like terms

= - 3x + 5

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