Jason takes a jump shot. The height of the basketball could be described by the model: h=-161? + 30++8, where 'h' describes the height of the ball in feet and the time in seconds after the ball was released. At what approximate time does the ball reach a height of 20 feet?

3× __ -2=15 7 2× __+1=7 5 7× =22 15 5× __+10=2 8 × __+4=20 6 × =10 3 × __+2=8 6 × __+8=8 9 × __+7=20 6

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup