Consider the case of the Cast Iron Company. On each nondelinquent sale, Cast Iron receives revenues with a present value of $1,220 and incurs costs with a present value of $1,000. Cast Irons costs have increased from $1,000 to $1,070. Assuming that there is no possibility of repeat orders and that the probability of successful collection from the customer is p = 0.97, answer the following. a-1. What is the expected profit of granting credit? (Do not round intermediate calculations.) a-2. Should Cast Iron grant or refuse credit? Grant Refuse b. What is the break-even probability of collection? (Enter your answer as a percent rounded to 1 decimal place.)