A bag contained 120 marbles some are red and the rest are black there are 19 red marbles for every black marble. How many red marbles are in the bag

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

Using elimination, what is -4x+2y=-12 4x+8y=-24