With a headwind, a plane traveled 390 mi in 1.5 h. let x represent the plane’s speed (excluding wind speed) and let y represent the wind speed in miles per hour.
which equation models this situation?
390 = 1.5x – 1.5y
390 = 1.5x – y
390 = 1.5x + 1.5y
390 = 1.5x + y

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?