What is the equation of the line on the graph?
i need help plzz can anyone help me

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

With alll of except for the 2 that i did already