Question

Lucky's Market purchased a new freezer for the store.When the freezer door stays open, the temperatureinside rises. The table shows how much thetemperature rises every 15 minutes. Find the unit rate.temperature (°F) =10number of minutes =15(answer) °F per minute

Answer 1

Notice that the information in the table can be modeled using a linear function. To find the slope (rate of change) given two points, use the formula below

`\begin{gathered} (x_1,y_1),(x_2,y_2) \\ \Rightarrow slope=m=(y_2-y_1)/(x_2-x_1) \end{gathered}`

Therefore, in our case,

`\begin{gathered} (15,10),(30,20) \\ \Rightarrow slope=(20-10)/(30-15)=(10)/(15)=(2)/(3) \end{gathered}`