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  1. The basketball team is ordering T-shirts to sell for a fund-raiser. The team paid $275 for the shirts and will sell them for $12 each. The relationship between the number of shirts sold and the team’s profit from the sale of the shirts can be represented by the function f(n) = 12n – 275, in which n represents the number of shirts sold. What is the dependent quantity in this functional relationship?

  2. Liang has $35 to spend on movie rentals and snacks for the weekend. He spends $12 on popcorn and soda. If the movie store rents DVDs for $4 each, write an inequality that models n, the number of DVDs Liang is able to rent.

  3. The total cost of an item at a store is the price of the item plus 6.5% sales tax. If c, the total cost of the item, is a function of x, the price of the item, write a function to model this situation.

  4. Sam is in line to buy concert tickets and will buy at least 1 ticket. Tickets cost $20 each, with a limit of 6 tickets per person. If x represents the number of tickets Sam purchases and y represents the amount in dollars he pays for the tickets, this function can be represented by the equation y = 20x. What is a reasonable domain for this function?

  5. Barbara is 3 times as old as Mark. If the sum of their ages is 52, write an equation that can be used to find their ages.

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