Which type of sampling method is being employed in the following example: “A post office manager was in charge of 11 postal delivery people. He wanted to do
a study on the customer's level of satisfaction for the customers he works with. So,
he asked 3 of his delivery people to ask every person on their delivery route to rate
their satisfaction of mail service on a scale of 1 to 10."

On a piece of paper graph f(x)=5•(0.4)^x

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?