Chris wants to determine the cost to travel from his house to the airport in a taxi cab. In order to determine the cost he uses the equation
, where c represents the cost, and d represents the distance in miles between his house and the airport.
Which statement explains why Chris will incorrectly determine the cost of taking the taxi cab to the airport?
Responses
Chris should have added d to 2.4 as shown by the equation
Chris should have added d to 2.4 as shown by the equation c = ( 2 . 4 + d ) .
Chris should have divided 2.4 by d as shown by the equation
.
Chris should have divided 2.4 by d as shown by the equation c = 2 . 4 d .
Chris should have subtracted 2.4 from d as shown by the equation
Chris should have subtracted 2.4 from d as shown by the equation c = ( d - 2 . 4 ) .
Chris should have multiplied 2.4 by d as shown by the equation
1 answer
The correct response is:
Chris should have multiplied 2.4 by d as shown by the equation \( c = 2.4d \).
This is because the cost \( c \) is calculated by multiplying the rate per mile (which is $2.40) by the distance \( d \) in miles. Therefore, the formula for the cost should be \( c = 2.4d \) and not any of the other operations (addition, subtraction, or division).
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