X^3+3x^2-28x=0 where will the graph cross the x axis

Question 5 spring semester final exam math evaluate

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

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 =