Write the stand ard form eqution of the polynomial with zeros x=0,1,-2

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 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?

Me because i don't understand how to do it.: )