Need the answer asap

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

The graph of g(x) is a translation of y = which equation represents g(x)?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?