Exercise 3-1 Fixed and Variable Cost Behaviour [LO1] Goes-Down-Smooth operates a number of smoothie bars in busy suburban malls. The fixed weekly expense of a smoothie bar is $2,500, and the variable cost per smoothie served is $0.75. Required: 1. Fill in the following table with your estimates of total costs and cost per smoothie at the indicated levels of activity for a smoothie bar. (Round your "Cost per smoothie served" answers to 2 decimal places.) 2. Does the cost per smoothie increase, decrease, or remain the same as the number of smoothies served in a week increases