Question: 1. (6pts) Let f and g both be functions from real numbers to real numbers. Let f(x)=x25 and g(x)=3+2x. Define each of the following. Simplify

1. (6pts) Let f and g both be functions from real

1. (6pts) Let f and g both be functions from real numbers to real numbers. Let f(x)=x25 and g(x)=3+2x. Define each of the following. Simplify your answer and show your work. (a) fg (b) gf (c) (gf)g 2. (6 pts) Let g:AB and f:BC be two functions. Prove or disprove the followings: (a) if f and g are surjective, then (fg) is surjective. (b) if f and g are injective, then (fg) is injective

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