A printer rental service charges a $120 flat fee for a printer plus $15 per additional day. Which equation correctly models the total cost of renting a printer for x number of days? (A) y = 15x + 120 (B) y = 15x (C) y = 120x + 15 (D) y = 120x -15

answer: t=3

step-by-step explanation:

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:

3000000000000000000000