Question

If f(x)=3x+5/x what is f(a+2)

Answer 1

$f(x) = \frac{3x + 5}{x} \\ f(a + 2) = \frac{3(a + 2) + 5}{a + 2} \\ f(a + 2) = \frac{3a + 6 + 5}{a + 2} \\ f(a + 2) = \frac{3a + 11}{a + 2}$
please give me the brainliest answer

Answer 2

$f(x)=\dfrac{3x+5}{x}\\\\f(a+2)-\text{substitute x = a + 2 to the equation of a function f}\\\\f(a+2)=\dfrac{3(a+2)+5}{a+2}\\\\\text{use distributive property}\\\\=\dfrac{(3)(a)+(3)(2)+5}{a+2}=\dfrac{3a+6+5}{a+2}=\dfrac{3a+11}{a+2}\\\\Answer:\ f(a+2)=\dfrac{3a+11}{a+2}$