help me please

Question

An expression is shown as 3•3•3•3•3.

Part A:

An equivalent form of the expression is given as 3^a, where a is a constant. What is the value of a?

a = _

Answer 1

3*3*3*3*3=3^a

count the number of 3's

there are 5 of them

a=5

3*3*3*3*3=3^5