Charlevoix Cases makes mobile phone cases. The company has collected the following price and cost characteristics:

Sales price $ $12\mathrm{.}00$ per case

Variable costs $5\mathrm{.}50$ per case

Fixed costs $395,850$ per year

Assume that the company plans to sell $75,900$ units annually. Consider requirements $($b$),($c$),$ and $($d$)$ independently of each other.

Required:

What will be the operating profit?

What is the impact on operating profit if the sales price decreases by $20$ percent? Increases by $10$ percent?

Note: Do not round intermediate calculations.

What is the impact on operating profit if variable costs per unit decrease by $20$ percent? Increase by $10$ percent?

Note: Do not round intermediate calculations.

Suppose that fixed costs for the year are $20$ percent lower than projected and variable costs per unit are $20$ percent higher than projected. What impact will these cost changes have on operating profit for the year? Will profit go up$?$ Down? By how much?

Note: Do not round intermediate calculations.