Can somebody me with 2,3,4,5? i already took the picture for somebody to see

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

Which statement best describes the polynomial

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?