Let x represent the unknown, and write an equation for the sentence. Do not solve. At a garage sale, the most expensive item was marked $21.00 more than the cheapest item. The sum of the two items was 
A. x + 21.00 = 24.80
B. 24.80 - x = 21.00
C. x(x + 21.00) = 24.80
D. x + (x + 21.00) = 24.80
Answer: D
Mathematics
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