Answer:
<h3>Part A</h3>
<u>4 CD's cost $30.40, so one CD costs:</u>
- 4p = $30.40
- p = $30.40/4
- p = $7.60
<h3>Part B</h3>
80% of the regular price is $7.60
<u>If the regular price is r, we have:</u>
- 0.8r = $7.60
- r = $7.60/0.8
- r = $9.5
<u>3 CD's at regular price cost:</u>
Since $25 < $28.5, we can't buy 3 more CD's.
<h3>Part C</h3>
It is G
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Answer:
Therefore the required equation is C = $ 15p - 60
Step-by-step explanation:
i) the price per gallon of paint = $p
ii) promotion offering price per gallon = $(p-4)
iii) cost of 15 gallons at the rate of promotion offering, C = 15(p - 4) = 15p - 60
Therefore the required equation is C = $ 15p - 60
