Commuter trains depart from North Station every 10 minutes. Subway trains depart every 3 minutes. A subway train and a commuter train both leave the station at 8:15. How long will it be before the subway train and the commuter train departs again at the same time? What time will that be?

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:

he kicked it up? is this the answer ?

step-by-step explanation:

the answer is  

a.

28 ft2

step-by-step explanation: