Question 1 1 pts Variable costs per unit vary inversely with changes in the activity base. remain constant with changes in the activity base. vary directly with changes in the activity base. have no connection with the activity base. Question 2 1 pts A relatively simple method of determining the fixed and variable parts of a mixed cost was shown in the text. This method is called the high-low method. side-by-side method. up-and-down method. party-mixer method. Question 3 1 pts At the breakeven point, cost of goods sold in units must be greater than sales in units. financial transparency is clearest. sales minus variable costs must equal fixed costs. sales minus fixed costs must equal variable costs