How many subsets of the set of divisors of 72 contain only composite numbers? for example, {8,9} and {4,8,12}$ are two such sets. include the empty set in your count.

257

Step-by-step explanation:

The divisors of 72 which are composite number are

4,6,8,9,12,18,36,72 (composite numbers are those numbers which are formed by the multiplication of two whole numbers}

So the total number of divisors which are composite are = 8

So total number of subset

In question it is said that also include empty set in count

So total number of subset =256+1=257

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

the correct option is b

step-by-step explanation: