A car is traveling at a constant speed, covering 220 km in 4 hours.
How many hours are needed to cover 550 km?

Solve the system of equations. y= 2x y= x^2 - 15

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Vertical angles must check all that apply