Question

Select the correct answer.A store owner gathered data for several days about the methods customers used to pay for their purchases. The scatter plot shows the data she gathered and the line of best fit.

Answer 1

The line of best fit for the data is given:

`y=0.755x+11.339`

Here, x is the number of customers who pay by cash and y is the number of customers who pay by card.

Put x=90 in the above equation to find the number of customers who pay by card when 90 customers pay by cash.

`\begin{gathered} y=0.755(90)+11.339 \\ =67.95+11.339 \\ =79.289 \end{gathered}`

Thus, option B is correct.