Question

the manager of a nail salon recorded the number of ads she ran in local newspapers and magazines and the number of customers her salon had in a week.which is the best interpretation of the y - intercept of the trend line shown?a. there are 0 customers when she runs 30 ads.b. there are 30 additional customers for every ad she runsc. there are 30 customers when she runs 0 ads.d. there are 75 additional customers for every ad she runs

Explanation:

The y - intercept of a line in the form \(y = mx + b\) (where \(y\) is the number of customers and \(x\) is the number of ads) is the value of \(y\) when \(x = 0\). In the context of this problem, when \(x=0\) (no ads are run), \(y = 30\) (the y - intercept).

Answer:

C. There are 30 customers when she runs 0 ads.