- 2018年03月30日18:00 来源：小站整理
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Mathematics>Standard Multiple Choice
Read the following SAT test question and thenclick on a button to select your answer.
Mia's law firm has $2000 worth of expenses eachmonth. Her firm charges $100 per hour for legal advice. The given equation shows the firm'sprofit, P, after being paid for h hours of legal advice during a one-month period. What is theminimum number of hours of legal advice that Mia's firm must be paid for during one month inorder to cover the firm's monthly expenses?
Choice A is correct. If the firm only covers themonthly expenses, the profit will be zero. Substituting 0 for P in the given equation andsolving for h will give the number of hours of legaladvice the firm needs to be paid for in order to break even.
This can be written as: P=100h-2000 0=100h-2000 h=20