2. From 1324. The fixed costs of making smoothies are $300. It is determined that after making 400 smoothies one day and adding in the variable costs of making them,, the total daily costs were $1300. What is the variable cost per smoothie? What is the cost function in y = mx + b to determine total cost? The sales price for each smoothie is $4.50. Using the cost function, determine the number of smoothies needed to break even. Will 400 smoothies one day make them break even or achieve positive profit?