Aplane travels from new york city to boston once each day how far does the plane travel in one week on this route the chart is boston, ma 217| rochester, ny 345| salt lake city, ut 2,171 estimate your answer then find the exact answer use rounding, regrouping, or place value. describe the strategy you used. exact answer strategy

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?