<h2>
Answer:</h2>
The number of trees which are less than 20 meters are:
9
<h2>
Step-by-step explanation:</h2>
Based on the histogram we are asked to find the number of trees which are less than 20 meters in height.
Class interval Frequency
4-8 1
8-12 2
12-16 2
16-20 4
20-24 6
24-28 4
28-32 2
i.e. we are asked to find the total number of tress that lie in the class interval 4-20.
i.e. we add the frequencies that lie in the interval 4-20
i.e. Number of trees= 1+2+2+4=9 trees.
<u>Answer:</u>
8
<u>Step-by-step explanation:</u>
We are given the following expression and we are to find the simplest form of this expression:
First of all, we will factor the coefficient:
Rewriting it as:
Applying the exponent rule 
to get:
She'll walk and run 5 miles, 2 to school and 3 in gym
The answer I believe is -36
