Katrina, Sarah, Edoardo, and Jim have all been invited to a dinner party. They arrive randomly and each person arrives at a different time.
In how many ways can they arrive? In how many ways can Katrina arrive first and Jim last? Find the probability that Katrina will arrive first and Jim last.

3× __ -2=15 7 2× __+1=7 5 7× =22 15 5× __+10=2 8 × __+4=20 6 × =10 3 × __+2=8 6 × __+8=8 9 × __+7=20 6

Factor this polynomial completely x^2-64

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