Question

Using the table below, what is the rate of change? Don’t forget to include your units.

Answer 1

The rate of change can be determined as,

$\begin{gathered} \text{Rate of change=}\frac{Difference\text{ in cost}}{\text{difference in the number of tickets}} \\ =\frac{192-120}{40-25} \\ =\frac{72}{15} \\ =4.80 \end{gathered}$

Thus, the rate of change is $4.80/ticket.

Thus, option (D) is the correct answer.