Dan has 20 books in his library. he bought several books at a yard sale over the weekend. he now has 71 books in his library. how many books did he buy at the yard sale?

a .4y4

hope this !

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.