Casey orders 3 pizzas and 2 orders of breadsticks for a total of $31. Rachel orders 2 pizzas and 3 orders of breadsticks for a total of $24. How much does a pizza cost? How much does a breadstrick cost?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

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?