Dave has $60 to spend on a new hockey jersey. select all of the following options that dave can afford.
a. a $55 jersey with 5% tax added to the total.
b. a $57 jersey bought online that requires an additional 10% shipping fee.
c. a $72 jersey with 8% tax.
d. a jersey that is 25% off of the original price of $85.

You must evaluate each of these options one by one:

A. A $55 jersey with 5% (.05) tax would equal 55 x (1+.05). This equation basically adds on 5% to the original $55.  This equals $57.75

B. You can calculate this similarly to above, because it is asking you to add 10% on to the original $57.  This would be 57 x (1+.10) = $62.70

C. This is clearly not an option because the original price of the jersey is already more than what Dave has.

D. This is asking you to deduct 25% of the original cost off of $85.  You find this similarly to above, but this time you deduct 25% from the 1 --> 85 x (1 - 0.25) = $63.75

So you can see that Dave can only afford option A. Does that make sense?