if f(x)=3x+5/x, what is f(a+2)?

if f(x)=3x+5/x, what is f(a+2) ?

a. 3a+5/a+2

b. 3(a+2)+5/a+2

c. 3(f(a))+5/f(a+2)

2 Answers

  •  

    f(x) = 3x + 5/x

    f(a+2) = 3(a+2) + 5/(a+2)

    If you need to use a common denominator, then you'd get:

    f(a+2) = (3(a+2)² + 5)/(a+2) = (3a²+12a+17)/(a+2)

  • f(x)=3x+5/x

    f(a+2)=3(a+2)+5/(a+2)

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