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1.) Given f(x) = x3 + 1 and g(x) = −x + 1 what is the value of (fg)(−4)?

A.) 315

B.) -315

C.) 225

D.) -225

2.) Given f(x) = x2 + 1 and g(x) = 3x, find (fg)(x).

A.) (fg)(x) = x2 + 3x + 1

B.) (fg)(x) = 3x^2 + 1

C.) (fg)(x) = 3x^3 + 1

D.) (fg)(x) = 3x^3 + 3x

Respuesta :

Answer: FOR NUMBER 2 (B)

Step-by-step explanation:

2. (fg)(x) = f (3x)

= (3x)2 + 1 = 3x^2 + 1 —> B