Donna recorded the number of hours she tutored each week for 4 weeks and what she earned for the week in the table below. Weekly Earnings

Number of Hours Worked Earnings

2 $50

4 $100

5 $125

8 $200

If x represents the number of hours Donna worked and y represents her earnings, which equation represents this relationship?

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.