There are 12 movies that Christine wants to see over winter break.  She only has time to see 4 of the movies. How many different groups of 4 movies are possible, if the order in which they are seen is not important?

graph it in Desmos to help you...but this has to do with the way the graph looks, given the degree and if the a value is positive or negative.

You can graph each of these in Desmos to see if they'll give you a vertical asymptote at 4...but a few of them should be quite obvious that it won't work. Which functions actually had asymptotes? Think about it.

So yeah, you should be able to come up with the factor here...

yeah, this one stinks...quad formula is your option..but desmos can give you some insight....