You and a friend join a gym the registration fee is $30 and the monthly membership is $20 if the total bill for you and your friend is $420 how many months did you pay for

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 . reset next