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Bell Entertainment sells souvenir T$-$shirts at each rock concert that it sponsors. The shirts cost $$7$ each. Any excess shirts can be returned to the manufacturer for a full refund of the purchase price. The sales price is $$16$ per shirt.

Required

a$.$ What are the total cost of shirts and cost per shirt if sales amount to $2,000,2,500,3,000,3,500,$ or $4$ s$.3?$

Note: Use the cells from the given information to complete this question.

$\backslash$table$[[$Number of shirts sold,$2,000,2,500,3,000,3,500,4,000],[$Total cost of shirts,,,,,$],[$Cost per shirt,,,,,$]]$

b$.$ Is the cost of T$-$shirts a fixed or a variable cost?

Note: Use the cells from the given information to complete this question.

Since the total cost of shirts in requirement A proportionately to the number of shirts sold, it is a $$

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