The sum of two numbers is 11. the larger number is 1 less than twice the smaller number. what are the two numbers? which equations can be used to express the problem as a system of two linear equations in slope-intercept form? select all that apply. y = 2x –1 y = x –11 y = x + 11 y = 11 – x

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?