Answer:
a) 
b) 
c) Yes.
Step-by-step explanation:
We have that:

And we have $10 free of taxes.
Making x= number of tires to buy, then we have that the total cost of tires is:

So, what we pay for taxes is given by:

a) Then, according to the above, we can write down the total cost before the discount as:

b) And the total cost after discounts, is then given by:

c) If the discount is added first, then less tax will be paid because the amount on which it is paid is lower. If the discount is added later, then the taxes will have been taxed on a higher amount, so it does matter whether they are added first or later.
Answer:
I like ur pic ..............
Cindy used 17.25 because 15 × .5 = 2.25 and if you add it to 15 ypu get 17.25
(7, 3) is the answer I believe
Answer:
-16y+3y i BELIEVEEE
Step-by-step explanation: