Four circles, each with a radius of 2 inches, are removed from a square. Four circles, each with a radius of 2 inches, are removed from a square. What is the remaining area of the square? (16 – 4π) in. 2 (16 – π) in. 2 (64 – 16π) in. 2 (64 – 4π) in. 2.

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?