Solve the system of equations.
- 4x +lly = 15
x = 2y

Multiply. write your answer in simplest form. 3/8 x 5/7

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

If you answer 2+2 you will get over 80 points