Must a function that is decreasing over a given interval always be negative over that same interval? Explain. (25 pts, 9th grade math)

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?

What is the value of x? enter your answer in the box. (cm)

If square root x = -7, then x= -49 true or false