Please need help ASAP

A. 810

Step-by-step explanation:

All you need to do here is add the number of children between ages 0-10 and children of ages between 10-20.

500+310= 810

Hope this helps! :)

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

The binary number 101 needs to be converted to base 10.
Label the binary number starting from the digit on the left with 0, 1, 2.
Then multiply each digit by 2(binary) raised to the power of the label it carries and then add all together to get the value in base 10
101=(1x2²)+(0x2¹)+(1x2⁰)
     =4+0+1
     =5
The answer is 5