Evaluate x2+yz for x=7 y=-4 and z=3 show each step of your work

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

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?

What is the difference between –12 and –5? what is the distance between –12 and –7 on a number line? units