Problem $12-21($Algo$)$ Prepare a contribution margin format income statement; answer what$-$if questions

LO $12-7,12-8,12-9$

Shown here is an income statement in the traditional format for a firm with a sales volume of $7,700$ units. Cost formulas also are shown:

Required:

a$.$ Prepare an income statement in the contribution margin format.

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

c$.$ Calculate the firm's operating income $($or loss$)$ if the volume changed from $7,700$ units to

$11,550$ units.

$3,850$ units.

d$.$ Refer to your answer to part a for total revenues of $$34,400.$ Calculate the firm's operating income $($or loss$)$ if unit selling price and

variable expenses per unit do not change and total revenues

Increase by $$12,000.$

Decrease by $$3,500.$

Complete this question by entering your answers in the tabs below.Prepare an income statement in the contribution margin format.