a delivery person uses a service elevator to bring boxes of books up to an office. the delivery person weighs 140ibs and each bix of books weighs 50ib. the maximum capacity of the elevator is 770ib. how many boxes of books can the delivery person bring up at one time?

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

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

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.