If the function f(x) = mx + b has an inverse function, which statement must be true? m not-equals 0
m = 0
b not-equals 0
b = 0

You have already traveled 30 miles east and then 30 miles north. to get back to the start, you travel 30 miles west in 1 hour and then 30 miles south in a half hour. what are your average speed and average velocity for the whole rally? consider a boat heading due east at 15 miles/hour. the water's current is moving at 7.1 miles/hour at 45º south of east.