What is true about the air pressure acting on the roof of your house?

a. it comes from the column of air above your roof.

b. it is much greater underneath your roof than on top of it.

c. it comes from the air within a few feet of your rooftop.

d. it is much greater on top of the roof than below it.

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%

answer:

1.14285714286

step-by-step explanation:

divide 40 into 35 and you will get your answer