Barry has 17 more than two-thirds of the number of cards in his brother’s baseball card collection. If x represents the number of baseball cards his brother has, which expression represents the number of baseball cards Barry has?

Two-thirds of the number of cards in his brother’s collection is (2/3)x. “17 more than” means add 17, so Barry has (2/3)x + 17 cards. This is choice D, “two-thirds x plus 17.”

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