Function C gives the cost, in dollars, of buying p pounds of blueberries. What information do I know given: C(p)=7 ? * Someone bought 7 pounds of blueberries.
Someone spent $7 on some amount of blueberries
None of the above are correct.

go on the tube you might find some information there

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.