Question: Some functions f have the property that f(a + b) = f(a) + f(b) for all real numbers a and b. Which of the following

Some functions f have the property that f(a + b) = f(a) + f(b) for all real numbers a and b. Which of the following functions have this property?

(a) h(x) = 2x

(b) g(x) = x2

(c) F(x) = 5x – 2

(d) G(x) = 1/x

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