Suppose we have the following multiple linear regression model. The variables Online ad budget and Print ad budget are both given in dollars. Predicted number of units sold = 2000 + 1.6*(Online ad budget) + 1.3*(Print ad budget) After controlling for the online ad budget, whenever the print ad budget increases $100, the predicted number of units sold ____ . Question 6 options: increases 130 increases 160 increases 290 None of the above / not enough information