On a number line, the surface of a river is marked at -220 feet and the top of a building is marked at +19 feet, where 0 represents sea level. What do -220 and +19 represent? A) 220 feet below sea level and 19 feet above sea level.

B) 220 feet above sea level and 19 feet below sea level.

C) 220 feet below sea level and 19 feet above 220.

D) 220 feet above sea level and 19 feet below 220.

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Step-by-step explanation:

step-by-step explanation:

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(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.