Carlos has scored 83, 81, and 73 on his previous three tests. what score does he need on his next test so that his average (mean) is 83 ?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?