Find the missing number 1:2 = 3:_

You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?

A(t)=728(1+0.04)^t how much money did aditya originally invest

What is the base of 1/9 to the power of 2