please solve a, b, and c

1. (15 points) Heister Corporation produces class rings to sell to college and high school students. These rings sell for $75 Och, and cost $35 each to produce. Heister has fixed costs of $50,000. A. Calculate Heister's break-even point. B. How much profit (loss) will Heister have if it sells 1,000 rings? 8,000 rings?) C. Heister's president, J. R. D'Angelo, expects an annual profit of $100,000. How rings must be sold to attain this profit? many