kiwibox

The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year. a. doubling the increase of b. doubling that of the increase in c. double as much as the increase of d. twice as many as the increase in e. twice as many as the increase of I chose E. Can someone help me understand why it is A? Thanks

So-called green taxes, which exact a price for the use of polluting or nonrenewable fuels, are having positive effects on the environment and natural resource base of countries as varied as China, the Netherlands, and Hungary. A. as varied as B. as varied as are C. as varied as those of D. that are as varied as E. that are varied as are Can someone help me understand how 'those of' is used correctly cause I originally chose C. :(

Ah, thanks :)

Hey, thanks for helping! ...but, I don't quite understand how you went from = 5^21 x 2^22 to = {(5 x 2 )^21} x 2

I...totally froze on this first question of quant :( I still can't figure it out... 5^21 x 4^11 = 2 x 10^n What is the value of n?