*WILL MARK BRAINLIEST, AND PLS HURRY* 1. the height of a tree was 16ft at the beginning of the year. at the end of the year, the tree is 17.5ft tall.
what is the percent increase?

2. the original price a sweater is 22$. this week the sweater is 18% off.
what is the current price of the sweater?

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?