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A 7th grader is taking his crush to the movies. He has $40 to spend. They go to the movies in the afternoon, when the tickets are only $8 each. He really wants to buy some snacks, too, which are on special for $4 each. Set up an equation to depict this scenario, and then explain how many snacks he can buy.
What is 2*8 + 4x = $40? He can buy 6 snacks.