Which equations are equivalent to the expression below? Check all that apply

9^x

A. 3 * 3^x

B. 3^2x

C. 3 * 3^x

D. (3 * 3) ^x

E. 3^2 * 3^x

F. 3^x * 3^x

It looks like selections A and C are identical. (Neither is equivalent to 9^x.)

If B is supposed to be 3^ (2x), it is equivalent to F and D and to the given expression.

Of course, D evaluates to 9^x, so is equivalent.

Choice E evaluates to 3^ (x+2), which is not equivalent to 3^ (2x).

The applicable choices appear to be

... B. 3^ (2x)

... D. (3*3) ^x

... F. (3^x) * (3^x)