Answer:
She should stay open, because the revenue of from dog grooming ($30 per dog), is still high enough to cover her variable cost of $20 per dog, even though she is operating at a loss.
Explanation:
Profit = Revenue - Total costs
Total costs = Fixed costs + variable costs
Profit = $30 - $35 = -$5 per dog
This shows she is operating at a loss of $5 per dog.
If a company does not make enough revenue to cover its total costs, then it is operating at a loss.
However such a company must consider its variable cost before deciding whether to shut down.
A company should only shut down if it is unable to make enough revenue to cover its variable cost.
If a company is operating at a loss but can at least cover its variable cost, then it should stay open at least in the short run.