A mountain road is 7 miles long and gains elevation at a constant rate. After 2 miles, the elevation is 5500 feet above sea level. After 4
miles, the elevation is 6200 feet above sea level.
Using the equation y=mx+b, determine what the elevation would be
after 5 miles?

Which system of linear inequalites is represented by the graph?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.