Can someone please help me out im confused

225/100 of last years cost. write each fraction as a decimal and as a percent

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?

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.