a$)$ Unit contribution margin

b$)$ Contribution margin ratio.

c$)$ Break$-$even in dollar sales.

d$)$ Margin of safety percentage.

e$)$ Operating leverage.

f$)$ Use your calculation of operating leverage, answer the following questions:

a$.$ If the sales volume increases by $\backslash (10\backslash \%\backslash ),$ what will be the change in operating profit?

b$.$ If the sales volume decreases by $\backslash (20\backslash \%\backslash ),$ what will be the change in operating profit?

g$)$ If the per unit variable production costs increase by $\backslash (15\backslash \%\backslash ),$ and fixed selling and administrative costs increase by $\backslash (12\backslash \%\backslash ),$ what will be the new break$-$even point in dollar sales?

h$)$ If the company is facing a $\backslash (25\backslash \%\backslash )$ tax rate, how much sales revenue they have to make in order to earn an after$-$tax profit of $\backslash (\backslash$$ $600,000\backslash )$