Does anyone know ? thx

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

In cents, what is the least total amount that cannot be obtained by using a combination of fewer than eight coins from a collection of pennies, nickels, dimes and quarters?