1) the distance traveled in a car varies directly as the amount of gasoline used. if a car travels 520 miles and uses 26 gallons of gas, find the constant of variation or miles per gallon. a) 18 mpg b) 20 mpg c) 22 mpg d) 24 mpg

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Find the solution of this system of equation -7x+y=-20 9x-3y=36

X+y=-4 x-y=2 use elimination with adding and subtraction