Aballoon rises into the sky at a speed of 4 meters per second. how long will it take the balloon to reach a bird flying 52 meters high? a. 13 seconds b. 14 seconds c. 15 seconds d. 16 seconds

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?