PLSPLSPLSPLSPLSPSLPLSPSLPSLPSLPSLPS LS HELP ME

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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 =

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?