1/2 a =11
what does a mean?

Which is f(5) for the function –2x2 + 2x - 3?

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Through which points should a line of rotation be placed to create a cylinder with a radius of 3 units