Im preparing for finals do show all steps for $4$ questions below. thank you

ZhaTech Company's produces a component $x$ for computer equipment. The fixed costs associated with manufacturing are $$150,000$ per year. If a base unit sells $$850$ and variable

cost $$370,$

i$)$ How manv units must be sold each vear for break$-$even?

ii$)$ What will the profit be for sales of $2500$ units per year?

iii$)$ If ZhaTech Company's fixed cost is actually $ $280,000$ per year, what is the profit at a sales level of $2500$ units per year?

iv$)$ By comparing the answes to the question $($ii$)$ and $($iii$)$ above, please explain your opinion.