Chapter 4.1, Problem 15PPE

To determine

To describe: and correct the error in the graph at the right that represents the relationship between total cost and number of shirts purchased.

Explanation of Solution

Given information:

T shirts cost $12.99 each for the first 5 shirts purchased. Each additional T shirt costs $4.99 each.

  

Calculation:

Consider the below graph, In the graph $x$ axis represents number of shirts and $y$ axis represents total cost.

  

Observe above graph, Can see that, total cost of shirts remains constant even through the numbers of T shirts are increasing. According to the question, the relation is for the first 5 T-shirts purchased the cost is $12.99 each and then each additional T- shirt costs $4.99.

Thus, the above graph does not depict the relationship between total cost and the numbers of T- shirt purchased. Instead, it shows the relationship between cost per T-shirt and total number of T-shirt purchased.

Correct graph is as follows. In this graph $x$ axis represents number of shirts and $y$ axis represents total cost-