Question

The cost, c(x), for a taxi ride is given by c(x) = 2x + 3.00, where x is the number of minutes. What does the slope mean for this situation?
a.The rate of change of the cost of the taxi ride is $3.00 per minute.
b.The rate of change of the cost of the taxi ride is $2.00 per minute.
c.The taxi ride costs a total of $3.00.
d.The taxi ride costs $2.00 per trip.

Answer 1

The correct answer is b) The rate of change of the cost of the taxi ride is $2.00 per minute.


This is proven with simple mathematics of how to calculate the fare of a taxi ride. 
Interestingly these simple equations are also used to measure the fare in a black taxi cab of London and even those for your Uber car.