2 answers:
Mult the 2nd by 2 then add. this eliminates one of the variables (y) and allows you to solve the other one x
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Answer:
its the 3rd one
Step-by-step explanation:
Bcs i know
Answer:
X+2.5
or X+7.5
or 5x+ 2.5
or 5x+7.5
Step-by-step explanation:
Use the formula (new price-old price) / old price
32-40=-8
-8/40=-20%
the percent difference is 20%
the negative means it was a markdown
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