Which of the following best describes how total cost is calculated in microeconomics?

Sweetie Nick has dreamt of owning a candy store his whole life. Unfortunately, after a few wrong turns, Sweetie Nick finds himself stuck in a job he hates, earning a nice salary of \$100,000, but he is completely dead inside. One day, Sweetie Nick is fed up and decides to quit his job and open a candy store. He takes his \$300,000 savings, which were earning 5% interest, and buys a property downtown. In his first year, Sweetie Nick sells \$220,000 worth of candy that he purchased for \$80,000. He also paid utilities of \$2,000 and hired a cashier that earned \$16,000 throughout the year. What is Sweetie Nick's accounting profit and economic profit?

A short run cost function assumes that:

A company currently has total costs of \$4,096 when producing 128 units. If total fixed costs equal \$1,024, what is average variable cost?

Rose incurs \$7,200 per month in fixed costs operating her floral shop. She pays her employees \$9 per hour and had three assistants working 120 hours this month. Her other variable costs were \$800 this month. What are Rose's total variable costs and total costs this month?