Find a sales receipt from a store that shows the total price of the items and the total amount paid including sales tax. Write an equation you can use to find the sales tax rate r. Can you use r to find the percent for the sales tax? Explain.​

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?