Question

The table shows the cost of shampoo at a discount store Cost $ 2.95 $4.50 $6.05 Number of bottles 1 2 3is the cost of the shampoo bottles proportional to the amount of bottles ?

Answer 1

Not proportional

Step-by-step explanation:

First, we determine the unit rate for each of the pairs of points.

`\begin{gathered} UnitRate=\frac{\text{Cost}}{\text{Number of bottles}} \\ (2.95)/(1)=\$2.95\text{ per bottle} \\ (4.50)/(2)=\$2.25\text{ per bottle} \\ (6.05)/(3)=\$2.02\text{ per bottle} \end{gathered}`

We see that the unit rates are not the same.

Therefore, the cost of the shampoo bottles IS NOT proportional to the number of bottles