13. SOLVE FOR X
21)
18
21
x+ 13
A) 8
C) 7
28
B) 11
D) 6

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?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

What is the lcm of 16 and 40 ? 24 and 40 ?