HELP The cost of an iPhone X is $1,149.00. The cost of an iPhone 4 is $199.00. How many times greater is the
cost of an iPhone X than an iPhone 4? Round your answer to the nearest tenth.
show your work please

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 =