What would it equal?

Question

if a is a positive real number, find the following value for the function given below g(x) = (7x)/(x ^ 2 + 8); g(sqrt(a)) =

Answer 1

Just plug in x = √a into the function rule (7x)/(x² + 8)

g(√a) = [7(√a)]/[(√a)² + 8]

g(√a) = 7√a/(a + 8)