A 3-pack of felt-tip pens cost $0.51. What is the unit price

$0.17/pen

Step-by-step explanation:

$0.17 or 17 cents

Step-by-step explanation:

3 pens costs 51 cents and you want to find out how much one pen costs.

0.51 divided by 3 = 0.17

answer: 1 + 1 = 11

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: