Question

The table shows the linear relationship between the total cost of orders of t-shirts and the number of t-shirts ordered.

Based on the table, what is the rate of change of the total cost in dollars with respect to the number of t-shirts ordered

Answer 1

$9.95 per shirt.

Explanation:

Rate of change =
`(y_2 - y_1)/(x_2 - x_1)`

Using the values of two pairs, (13, 154.50) and (24, 263.95),

rate of change =
`(109.45)/(11)`

rate of change = 9.95 [/tex]

(Note: you'd get the same rate of change if you use the values of any two pairs on the table.)

The rate of change of the total cost of t-shirt with respect to the number of ordered t-shirt is $9.95 per shirt.