How do i get x? i am really confused.

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?

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?