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

scenarios:

a$.$ Sales price increases by $$1\mathrm{.}20$ per cake.

b$.$ Fixed costs increase by $$485$ per month.

c$.$ Variable costs decrease by $$0\mathrm{.}41$ per cake.

d$.$ Sales price decreases by $$0\mathrm{.}70$ per cake.

Assume that Cove sold $440$ 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 $7$

percent increase in sales revenue.