C1) Student Council held a fundraising even last month. The expenses were $5.75, $4.75, and $3.75. The amunts of money they raised were $13.50, $24.70,
$13.15, and $19.50. Did the class make any money? If so, how much?
Yes/No Student Council did/did not make any money because
C2) Explain how you know which operations to use

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

b is the right answer