How many 4 digit numbers can be created from the digits 7.3.1,8,3 and 4

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Polynomial that can be factored as (3x-4)(3x+4)