There are 16 entrees available at a restaurant. From these, Archie is to choose 6 from his party. How many groups of 6 entrees can he choose, assuming that the order of the entrees chosen does not matter ?

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation