Question

If f(x) = 2x +1 and g(x) = 3x + 4 , write down (f+g) (-3)

A. -10
B. 15
C. -15
D.
10​

Answer 1

A

Explanation:

(f + g)x = 2x + 1 + 3x + 4 Collect like terms

(f + g)x = 5x + 5

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

(f + g)(-3) = -15 + 5

(f + g)(-3) = - 10

A