Which one are they is there multiple? i think its 1 and 4. photo below.

An irrational number is a number that cannot be expressed as a fraction. And an irrational number cannot be multiplied by another irrational number or a rational number to create a rational number.
1 and 4 are both rational so I am pretty sure that you are just guessing.
2, 3, and 6 are irrational.

810 people are under the age of 20 are in Disney World

Step-by-step explanation:

Find the bars of the graph that are before the graph that indicates the age 20.

There are two bars, one with the ages between 0-10 another with the ages 10-20.

Add the results of both graphs.

810