Required:e$.$ Prepare an Income statement In the contribution margin format.

b$.$ Calculate the contribution margin per unit and the contribution margin ratio

c$.$ Calculate the firms operating Income $($or loss$)$ If the volume changed from $10,000$ units to$1.14,000$ units$\mathrm{.}2.6,000$ units.

d$.$ Refer to your answer to part a for total revenues of $$50\mathrm{.}000.$ Calculate the firm's operating Income $($or loss$)$ If unit selling price and varable expenses per unit do not change and total revenues

$1.$ Increase $$15,000$

$2.$ Decrease $$13,000.$