At a store, 2 pillows and 3 pillow cases together cost $73.08. The total cost of 3 pillows and 4 sheets is $120.82. If the price of the
pillows is 3 times as much as the price of a pillow case, what is the
total cost of 5 pillows and 7 sheets?
(Round to the nearest cents)
$

Aschool typically sells 500 yearbooks each year for 50 dollars each. the economic calls does a project and discovers that they can sell 100 more yearbooks for every $5 decrease in price. the revenue for yearbook sales is equal to the number of yearbooks sold times the price of the yearbook. let x represent the number of $5 decrease in price. if the expression that represents the revenue is written in the form r(x)=(500+ax)(50-bx). to maximize profit, what price should the school charge for the yearbooks? what is the possible maximum revenue? if the school attains the maximum revenue, how many yearbooks will they sell?

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.

The parabola opens: y=√x-4 (principal square root) up down right left