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

A. (f + g) (x) = 5x + 11

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

C. (f + g) (x) = - 5x - 11

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

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Guest

19 July, 03:27

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Levy · Answer 1

Here we are simply adding the two function to create a new one ...

(f+g) (x) = f (x) + g (x)

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

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

If f (x) = x + 8 and g (x) = - 4x - 3, find (f + g) (x).A. (f + g) (x) = 5x + 11B. (f + g) (x) = - 3x + 5C. (f + g) (x) = - 5x - 11D. (f + g) (x) = 3x - 5