\begin{aligned} &y=3x -5 &y=x -1 \end{aligned}


y=3x−5
y=x−1


Is (2,1)(2,1)left parenthesis, 2, comma, 1, right parenthesis a solution of the system?

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?