A small business owner wants to know if the she can predict weekly sales based on the amount of money she spends on advertising. She already has the data in her excel spread sheet and quickly computes the regression equation to be y = 5x + 32 R2 = 0.63 a. According to the equation, how much money should she spend on advertising to have sales of 50,000? b. What does the slope mean in terms of the situation? c. What does the y-intercept mean in terms of the situation? d. What does the coefficient of determine mean in terms of the situation?