Sarah and Stan went to the mall to purchase shirts and jeans. The store has a sale and each shirt costs the same amount and each jean costs the sam amount.
-Sarah paid $260 for 3 shirts and 4 jeans.

-Stan paid $230 for 4 shirts and 3 jeans.

-What was the cost in dollars for each jean?

(Self answer by the ways)

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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?