What is the function of a header when writing html

The average cost of one year at a private college in 2012-2013 is $43,289. the average grant aid received by a student at a private college in 2012-2013 is $15,680.   what is the average student contribution for one year at a private college in 2012-2013?

Which argument is not a valid filter? does not equal this quarter filter by cell color all of these are valid filter arguments.

What are the possible consequences of computer hacking? what is computer piracy? describe some examples. what are the effects of computer piracy? what are the possible consequences of computer piracy? what is intentional virus setting? describe some examples. what are the effects of intentional virus setting? what are the possible consequences of intentional virus setting? what is invasion of privacy? describe some examples. what are the effects of invasion of privacy? what are the possible consequences of invasion of privacy? what is an acceptable use policy and what is the purpose of the acceptable use policy what is intellectual property and how can you use it?