please answer all questions correctly and give explanation. Will give a thumbs up

QUESTION 8 The break-even point is where total sales equal total variable costs True O False QUESTION 10 Cost Behavior and Cost-Volume-Profit applies to for-profit businesses and entities but not to non-profits O True O False QUESTION 11 Fixed Costs divided by ?? = Break Even in Units o Operating Profit per unit O Gross Margin per unit O Contribution Margin per Unit Total Sales - Total Variable Costs = O Gross Profit O Operating Profit O Contribution Margin QUESTION 15 Total Fixed cost/ Contribution Margin per Unit (aka-Selling Price - Unit variable cost) Break even point in sales dollars O Break Even point in units QUESTION 16 The margin of safety is difference between sales at breakeven & sales at planned activity level O True O False