Can someone help me understand this math problem?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

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