Traveling with a speed of 70 kilometers per hour, a car covered a distance s in t hours. Using a formula, express the dependence of s on t; using the formula, find the distance the car traveled between 3 hours 30 minutes and 5 hours. What is s(t)?

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?

This is so hard and it’s for a test

What is the solution set of the quadratic inequality x^2-5< or equal to 0