Try Spirit Calendars imprints calendars with college names. The company has fixed expenses of $ $1$ comma $095$ comma $000$ each month plus variable expenses of $ $4\mathrm{.}00$ per carton of calendars. Of the variable$$ expense, $68\%$ is cost of goods$$ sold, while the remaining $32\%$ relates to variable operating expenses. The company sells each carton of calendars for $ $12\mathrm{.}00.$

$1.$Compute the number of cartons of calendars that Try Spirit Calendars must sell each month to break even.$$

$2.$Compute the dollar amount of monthly sales that the company needs in order to earn $ $312$ comma $000$ in operating income$($round the contribution margin ratio to two decimal$$ places$).$

$3.$Prepare the$$ company's contribution margin income statement for June for sales of $455$ comma $000$ cartons of calendars.

$4.$What is$$ June's margin of safety$($in dollars$)?$ What is the operating leverage factor at this level of$$ sales?

$5.$By what percentage will operating income change if$$ July's sales volume is $15\%$higher$?$ Prove your answer.

$($need help with part $5)$