A train leaves a station and travels east at 72 mph. Three hours later a
second train leaves on a parallel track and travels east at 120 mph. When
will the second train overtake the first train?

5 hours 45 minutes
4 hours 20 minutes
4 hours 30 minutes
5 hours
6 hours

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

christopher is 272,195 year old

step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)