Write a simplified expression for each of the following: a. Area of the large rectangle. B. Area of the small rectangle. C. Area of the shaded area. Large rectangle dimensions: 5 1/2 +x times 5 1/2 - x. Dimensions of small rectangle: 3 1/4 - x times 3 1/4 + x

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?