PLEASE help me find the solution for this STAT problem

An online article suggested that for each additional person who took up regular running for exercise, the number of cigarettes smoked daily would decrease by 0.176. If we assume that 45 million cigarettes would be smoked per day if nobody ran, what is the equation of the regression line for predicting number of cigarettes smoked per day from the number of people who regularly run for exercise? Denote (new runners) as x x . Do not include commas in your answer.

Cigarettes =