If f (x) = 2x + 1 and g(x) = x2 + 7. which of the following is equal to f(g(x)) ?

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

Can someone explain to me how to do

The function f(x) is shown in this graph the function g(x)=6x