In figure find the value of x triangle PQR

20 POINTS

43lbs of tomatos cost $387. how much would 41lbs cost

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

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?