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A cab company calculates cab fares using the expression 1.50d + 3, where d is the distance traveled in miles. If a passenger has to pay a $21 fare for a ride, which number from the set {9, 12, 15, 18}
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A cab company calculates cab fares using the expression 1.50d + 3, where d is the distance traveled in miles. If a passenger has to pay a $21 fare for a ride, which number from the set {9, 12, 15, 18} is the value of d?

User Lucas Andrade
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1 Answer

3 votes

Answer:

12

Explanation:

⇒ 21 - 3 = 18 = 1.5a

⇒ a = 12

User Ellington
by
4.6k points
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