Solve combining like terms 3=5+1 x-1

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?

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart