A perfect square is a number that can be expressed as the product of two equal integers.
The only way to accurately calculate if a number is a perfect square is to find the factors. Before we go through the trouble of finding the factors, there is a quick trick you can use to help determine if you need even need to do the extra work.
Answer:
C. $22
Step-by-step explanation:
We are given a graph showing the relation between the distance travelled in miles by taxi and the taxi fare.
To find an estimate of how much her taxi fare would be if she travelled 8.5 miles by taxi, simply look 8.5 on the x-axis, then trace it upwards till it meets the line. The point where it meets the line would be the corresponding y-value of x = 8.5.
The point would be (8.5, 22). This means, if the woman travels 8.5 miles, her taxi charges would be approximately $22.
<u>Answer:</u>
- A: (Negative 3 and one-half, 2 and one-half)
<u>Solution:</u>
On a graph, left would be a negative and up would be a positive. Hence the answer is A as none of the others are using the correct numbers.
Hope this helped!
-Zac
