If a babysitter babysat for 2 hours each night for 10 night. she made $180. she wants to she how much she makes per hour
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The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.