-01) which of the values for x and y make the equation 2x + 3y + 4 = 15 true?
1) x = 6, y = 3
2) x = 3, y = 5
3) x = 6, y = 4
4)x = 1, y = 3

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?