David leaves the house to go to school. He walks 290 m west and 170 m north. To the nearest tenth, how far away is he from his starting point?

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

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Solve the system of equations y= 3/2 - 1, -x+ y =-3