You have \($130\) to spend at August “back-to-school”

sales. The tennis shoes you really want cost \($105\) plus 7 percent sales tax.

Online, the shoes cost \($95.99\), with 11 percent shipping charges but no sales tax. Based on experience, you think the shoes’ price will be one-third less by mid-October.

1. Calculate

(a) How much will the shoes cost in October? Compare that total price to the current store and online prices.

(b) What trade-offs do you incur by waiting to buy the shoes?

(c) How do those trade-offs compare to having more money now for other purchases?

2. Compute by using spreadsheet software the total costs of the shoes in stores now, online now, and in stores in October.