As a first step we have to find the total cost of all the items that Cameron purchased at the store.
The total cost of all the four items are: 1.49 + 0.93 + 1.29 + 0.79 = $4.50
This is the bill without any tax. We have been given that there is an 8% Sales tax on the bill amount
The amount of sales tax = 8% * 4.50 = 8/100 * 4.50 = 0.08*4.50 = $0.36
So the total amount he spent = $4.50 + $0.36 = $4.86