Gina chuez has considered starting her own custom greeting card business. with an initial start up cost of $1500, she figures it will cost $0.45 to produce each card. in order to remain competitive with the larger greeting card companies, gina must sell her cards for no more than $1.70 each. to make a profit, her income must exceed her costs. how many cards must she sell before making a profit? a. at least 1187 cardsc. at least 1200 cardsb. at least 1230 cardsd. at least 1425 cards