At a school fair, 70% of the people are under 16 years old. one-third of the people remaining are teachers. if
there are 21 teachers at the fair, how many people are there at the fair total?

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step-by-step explanation:

(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.