Given the following linear regression model: Profit ($) = -13 + 0.1 *counter Sales ($) + 0.03 * Drive through sales How many extra counter sales are required to increase the profit by 1$, assuming every else is the same (Drive through sales = 100) What is the interpretation of the coefficient attached to the Cost ($) variable? Profit ($) = -134 - 0.6 fixing cost ($)