Alex wants to fence in an area for a dog park. He has plotted three sides of the fenced area at the points E (3, 5), F (6, 5), and G (9, 1). He has 22 units of fencing. Where could Alex place point H so that he does not have to buy more fencing? (0, 0) (−1, 0) (0, −3) (0, 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?