7 (3 + 5) = __ + __ is what?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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?

If you could answer these your a life saver