a dvd box set has 3 thriller movies and 2 comedies. use T to represent the cost of each thriller and C to represent the cost of each comedy. write and simplify an expression that represents the total cost of 6 box sets

First, write the cost of 1 box set:

3T + 2C <--- 3 thrillers and 2 comedies are in each box set

6 box sets would cost 6 times the expression above:

6(3T + 2C)

Simplify by carrying the 6 through:

18T + 12C

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