M arcCB= _
m arc ACE= _

22

step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

41*67/2=1373.5

step-by-step explanation:

i just used a calculator

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%