Which numbers are irrational?

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?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Solve the inequality and graph 6j - 7 < 5