Find the sum of the arithmetic sequence 4, 1, −2, −5, … , −56

The system of equations graphed below has how many solutions?

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

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?