If there are 8 days of Hannukah, and for each night you receive one gift, how many gifts you would have received by the age of 21 total (assuming you received gifts each year)?

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?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Yvaries inversely as x. y =12 when x=5. find y when x=4