A radio that costs $20.40 was marked up by 35% What was the markup and selling price? Sorry I don’t get it

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 =

What is the inverse of the function fx = 2x-10

Idon’t know what to do after i plot my first shape