Kelly subtracted 2.3 from 20 and got 17.7, explain why this answer is reasonable. need by 5: 30 today 9\15\15

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?

Find the amount of simple interest earned for depositing the given principle in an account if $2200 is invested at 5.5 % for 6 months

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?