X + y = 4 x - 2y = -5

If the first equation is multiplied by 2 and then the equations are added, the result is .

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.