A circle has a radius of 7 cm. Workout the area of the circle. Give your answer correct to three significant figures.

Ihave trouble finding the nth term of a linear sequence

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?

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11