Given the following sets: A={1,2,4,11,12}
B={2,4,7,8,11}
C={x∈Z:xis even}
D={x∈Z:xis odd}

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%