On a weekend class gathering at a museum, a teacher brings $50 to pay for museum
admission. She buys an adult ticket for $3.50 and 13 student tickets. Three students arrive late
so she buys 3 more student tickets. She has $18.50 left. Which equation can you use to find the
cost of a student ticket?
a.) 13x + 3x = 50 - 18.50 c.) 13x + 3.50 +3x = 50
b.) 13x + 3.50 + 3x + 18.50 = 50 d.) 3x = 3.50 + 13x
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