Carver packing company reports total contribution margin of $72,000 and pretax net income of $24,000 for the current month. in the next month, the company expects sales volume to increase by 8%. the degree of operating leverage and the expected percent change in income, respectively, are:

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?