Shaniqua brings home $225 per week working 25 hours. she is able to save $25 of her earnings each week. shaniqua wants to have $600 saved at the end of 15 weeks. she is allowed to work up to 30 hours per week if she wants. she can save all the money earned working extra hours. which of the following statements is true?

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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.

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