Question

Rewrite exponential expressions

Answer 1

A = 48

Explanation:

In this equation, we can factor out the expression
`((1)/(7) )^x`. If we do so, the expression becomes:

`((1)/(7))^x(((1)/(7))^(-2) - 1)`

We can simplify to get:

`((1)/(7) )^x(49 - 1)`

and get:

`48*((1)/(7))^x`

Therefore, A = 48