How do i set up the equation for this? if your average speed is 55 mph, how long will it take you to drive 248 miles?

∠aed is formed inside a circle by two intersecting chords. if minor arc bd = 70 and minor arc ac = 180, what is the measure of ∠ aed? a) 45° b) 50° c) 55° d) 60°

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

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9