Team Spirit imprints calendars with college and university names. The company has fixed expenses of $1,035,000 each month plus variable expenses of $3.60 per carton of calendars. Of the variable expense, 70% is cost of goods sold, while the remaining 30% relates to variable operating expenses. Team Spirit sells each carton of calendars for $10.50

1a) Use the contribution margin short cut formula to compute the dollar amount of monthly sales Team Spirit needs in order to earn $285,000 in operating income. 1b) prepare Team Spirit contribution margin income statement for June for sales of 450,000 cartons of calenders. 1c) what is June's margin of safety in dollars.