Tyler needs $205 for a new video game system. He has already saved $30.He earns $7 an hour at his job. Write and solve an inequality to find how many hours he will need to work to buy a system. Interpret the solution.

11 hours

Step-by-step explanation:

205

-30

175

75/7

11 hours = 77$

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: