Question

f as a function of x is equal to the square root of quantity x plus two; g(x) = 8x - 6 Find f(g(x)). f(g(x)) = 8 times the square root of quantity x minus four f(g(x)) = 2 times the square root of quantity two x plus one f(g(x)) = 2 times the square root of quantity two x minus one f(g(x)) =8 times the square root of quantity x plus two minus 6

Answer 1

f(x)=$\sqrt{x+2}$

g(x)=8x-6

f(g(x))=$\sqrt{(8x-6)+2}=\sqrt{8x-4}=\sqrt{4(2x-1)}=2\sqrt{2x-1}$

answer: the third option