Cove's Cakes is a local bakery. Price and cost information follows:

Required:

Calculate Cove's new break$-$even point under each of the following independent scenarios:

a$.$ Sales price increases by $$1\mathrm{.}60$ per cake.

b$.$ Fixed costs increase by $$505$ per month.

c$.$ Variable costs decrease by $$0\mathrm{.}39$ per cake.

d$.$ Sales price decreases by $$0\mathrm{.}40$ per cake.

Assume that Cove sold $345$ cakes last month. Calculate the company's degree of operating leverage.

Using the degree of operating leverage, calculate the change in profit caused by a $12$ percent increase in sales revenue.