A dry cleaner has a cleaning rate of $40 per 6 shirts. Which graph can be used to find the equivalent rate for 21 shirts?(1 point)
A line graph can be used to find the equivalent rate for 21 shirts.
To find the equivalent rate for 21 shirts, we need to set up a proportion using the given information. We know that the dry cleaner charges $40 for 6 shirts, so we can set up the proportion:
$40 / 6 shirts = x / 21 shirts
To solve for x (the equivalent rate for 21 shirts), we can cross-multiply and then divide:
(6 shirts) * (x) = ($40) * (21 shirts)
6x = 840
Now, to determine the equivalent rate, we divide both sides of the equation by 6:
x = 840 / 6
x ≈ $140
Therefore, the equivalent rate for 21 shirts is approximately $140.
As for the graph, since we are looking for the equivalent rate, we can plot the number of shirts on the x-axis and the cost on the y-axis. We can use a line graph to represent the relationship. The x-coordinate represents the number of shirts, while the y-coordinate represents the cost. The graph will show a positive slope indicating a direct relationship between the number of shirts and the cost.