Question

Gavin says that 81 can only be shown as a power with a base of 9. Hayley says that 81 can be shown as a power with a base of 3 or 9. Who is correct? Show how you know.

Answer 1

Hayley is correct.

Explanation:

81 can have a base of 9, as 9*9 = 81. However, it can also have a base of 3, as 3*3*3*3 = 81. 81 can be shown as a power with a base of 3 or 9.