We need to survey a sample of the 300 passengers on a flight from Los Angeles to New York. Match each description below with the sampling method:a. Pick every 10th passenger as people board the plane. b. From the boarding list, randomly select 5 people flying first class and 25 of the other passengers. c. Randomly pick 30 seat numbers, and survey the passengers who sit there. d. Randomly select a seat position (right window, right center, right aisle, etc.) and survey all the passengers sitting in those seats. 1) Cluster sampling 2) SRS 3) Systematic sampling4) Stratified sampling

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?