HELPP PLEASEE! please

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?

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?