I need help on questions 14 & 15

(mutilpe choice)

QUESTION 14 Which of the following formulas is used to calculate break-even point in units Break-even point in units - Total costs / Unit contribution margin Break-even point in units - Sales / Fred costs Break-even point in units - Sales / Unit variable cost Break-even point in units - Total fixed costs Price - Unit vanable cost) QUESTION 15 Which of the following is NOT a use of CVP (Cost-Volume-Profit) analysis the ability to conduct sensitivity analysis of cost or price changes the identification of price and efficiency variances how many units must be sold to break even what is the impact on the break-even point of an increase or decrease in fixed costs