Mark borrowed $53 from his parents for his graduation expenses. he paid $29. how much does mark still owe

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?