Please help.

Simplify each expression. Your answer should contain only positive exponents.

(3x^4·y^5)^2

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?

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Math i have no idea how to do a and b