Simplify the following expression. 4^-11/3 divided by 4^-2/3

A. 1/64
B. 12
C. 64
D.1/12

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?