Question

find the error avery wants to order new practice t - shirts for her soccer team. the ratio of the total cost to the number of t - shirts purchased for three different stores is shown in the graph. avery says that the shirts will cost less from shirts galore because the graph is steeper than the graphs of the other relationships. find her mistake and correct it.

Explanation:

Step1: Understand slope - cost relationship

In a cost - quantity graph, slope represents unit cost.

Step2: Analyze steepness and cost

A steeper slope means a higher unit cost. Avery thought wrong as a steeper graph implies higher cost per T - shirt. Shirts Now has the least steep graph, so it has the lowest unit cost.

Answer:

Avery's mistake is that she thought a steeper graph meant a lower cost. In fact, a steeper graph in this context means a higher unit cost. The shirts will cost less from Shirts Now because its graph has the least steep slope, indicating the lowest unit cost among the three stores.