I NEED A DETAILED EXPLANATION OF HOW TO SOLVE THIS PLEASE OR JUST THE FORMULA
An employer uses the linear regression equation y = 0.18 x + 320.22 to predict the weekly salary, y, of an employee who sells x dollars worth of merchandise. Last week, Joaquin sold $1500 worth of merchandise. The same week, Alex earned $650. Using the regression equation, which is an accurate comparison?
Alex sold merchandise worth about $60 more than what Joaquin sold.
Joaquin sold merchandise worth about $60 more than what Joaquin sold.
Alex earned about $60 more than Joaquin did.
Joaquin earned about $60 more than Alex did.