PLEASE HELP I NEED THIS ANSWER FOR MY TEST!!!!!! Please try to explain the answer.
 Which of the following functions is equivalent to the function below?
 Select two that apply. f(x) = 3^(2x+1)
 g(x )= 3 ⋅ 9^x
 g(x )= 3^(2x) + 3
 g(x )= 27^x
 g(x) = 2 ⋅ 3^(x) + 1
 g(x )= (1/3)^(−(2x+1))
 g(x) = 9^(x) + 1