Question

Price of Bottles8Find the unit rate ofthe price per bottle.76$12 bottles=Price ($)$[?]1 bottle32Give your answer asa decimal.10 1 2 3 4 5 6 7 8 9Number of Bottles

Answer 1

We need to find the price of 1 bottle. From the graph, 2 bottles cost $1. If x represents the cost of 1 bottle, the next proportion must be satisfied:

$\frac{1\text{ \ }}{2\text{ bottles}}=\frac{x\text{ \ }}{1\text{ bottle}}$

Solving for x:

$\begin{gathered} 1\cdot1=x\cdot2 \\ \frac{1}{2}=x \\ 0.5\text{ \ }=x \end{gathered}$