I am 15 years old right now. How many years until i turn 18 years old?? I was born on May 9, 2005. If yoi answer this one i will give you

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

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?

Can someone me with my math problem pls my teacher is on my back about this