Suppose the growth of a tumor with radius r(t) (t = time in weeks) is described by the equation r′(t)=k1t+n(t) where n(t)=2k2, k1=1, and k2=1.5. If the tumor's initial radius is r(0)=0.25 cm, which of the following is the closest to the time it would take for the tumor to reach a radius of 15 cm?

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction