Solve equation by using the quadratic formula

The perimiter of a rectangle is 70 inches the legneth of the rectangle is 5 less than 3 times the width of the rectangle what is the width of the rectangle

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

School x and school y play each other in a competition school x has eight morepoinys than school y. school x has three times as many points as school y. how many points does each school have