Help me on 6.) please

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?

Which table shows a proportional relationship between miles traveled and gas used?

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.