1.Molly buys a necklace for $400 on her credit card, which charges 21% simple interest. How much interest will be added after 6 months? Write an equation and solve the problem.

The number of possible solutions of a polynomial can be found by looking

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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?