Sam raked three bags of leaves in 16 minutes if he continues to work at the same rate about how long will it take in to rake 5 bags

How do you determine whether a relationship represented as as graph is linear or nonlinear

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?