Bob travels 2500 miles in a car which uses gas at a rate of 32 miles for each gallon of gas when he is traveling 60 miles per hour. a) How many gallons of gas does he use on his 2500 mile trip?
b) If he travels 2500 miles at 60 miles per hour how long does the trip take?

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is