In how many ways can you select two people from a group of 20 if the order of selection is not important?

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test