8) leon played a game and lost or gained points
each round. the points earned or gained are shown
below. what was his total score after 6 rounds?
10, -6, -3, 2, - 8, 4
c) - 1
d) -3
b) 1
a) -17

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?