Answer:

Step-by-step explanation:
Combine like-terms: 
Answer:
right angle
Step-by-step explanation:
the square in the corner means it is 90 degrees, making it a right angle
Answer:
C
Step-by-step explanation:
40x + 3
Answer:
672 students
Step-by-step explanation:
To find the answer you would first need to find how many people out of the 75 middle school students didn't prefer apples. Since 67 out of 75 students liked apples we can only assume the other 8 students didn't prefer apples. We will then divide 8 by 75 to get the percentage. This will give us the percentage .106. Next multiply 6,300 by .106 and we get 672.
Using it's concept, it is found that the average rate of change of this function over the interval of time from 30 days to 60 days is of 0.4 insects per day.
<h3>What is the average rate of change?</h3>
- The <em>average rate of change</em> of a function f(x) over an interval [a,b] is given by the <u>change in the output divided by the change in the input</u>, that is:

In this problem:
- The inputs are of 30 and 60 days, hence
.
- At day 30, there are 20 insects, hence
.
- At day 60, there are 32 insects, hence
.
Then:

The average rate of change of this function over the interval of time from 30 days to 60 days is of 0.4 insects per day.
You can learn more about the average rate of change at brainly.com/question/25775946