The good show ticket agency offered 20,000 tickets for an outdoor concert. they sold 17,343 tickets. the concert was rained out near the end. as a result, 1239 people asked for their money back and the agency gave them a refund. after the refund, what is the total number of concert tickets the agency actually sold?

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.