Nadia is observing the actions of a hot air balloon from a viewing area about 300 ft what function models the height H in feet and the balloon as a function of the angle of indication ø from Nadia's position in the viewing area of the balloon?

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?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.