Given g(x) = 6x and h(x) = -3x - 6, find h(g(x)).

h(g(x)) = -18x - 36

h(g(x)) = -18x2 - 6x

h(g(x)) = -18x + 6

h(g(x)) = -18x - 6

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?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.