(! ) which pair of ratios form a proportion? 5 : 11 and 6 : 127 : 13 and 21 : 398 : 14 and 24 : 3010 : 20 and 20 : 30

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

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