Hi Deborah,
The price of a baseball cap is $9.00 plus $.78 tax. which expression could be used to find the cost of 5 caps.
Step One: One cap can be expressed as:
(Cost)(the number of caps)+tax
9x+.78
Step Two: For five caps, we can multiply this expression by 5:
5(9x+.78)
Sincerely,
Starlyte H.