At the movie theater child admission is $5.30 an adult admission is nine dollars on friday twice as many adult tickets as child tickets were sold for a total sales of $722.30 how many child tickets were sold that day?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =