If f is the function defined by f(x)=(1/x−1)/(x−1), then limx→1f(x) is equivalent to which of the following?

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m