Mark bought a box of dog biscuits for 1.89, a box of detergent for 3.50, and a package of lunch meat for 1.75. The store doubles the value of coupons. Marks purchases totaled how much? His coupons were worth how much? What did park pay?

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?