Darren and Barb each tried to evaluate 62 +4 + 2. Darren
Barb
6+4+2
= 36 + 4+2
= 40 + 2
62 +4 + 2
= 36 + 4+ 2
= 36 + 2
= 38
- 20
Who evaluated the expression correctly? Explain what
the other student did wrong.

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?