How can i write a decimal addition problem that requires regrouping the hundredths and how will i know that i need to regroup?

Country carpets charges $22 per square yard for carpeting, and an additional installation fee of $100. city carpets charges $25 per square yard for the same carpeting, and an additional installation fee of $70

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?

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days