13x-1=9x-13 what is x

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Iam at home. /: i am playing video games. translate the following statement into symbolic form.