Answer :
To find out how long it will take Wendy to type a document that is 720 words long, we can use the information about her typing speed. Wendy types 80 words per minute.
To determine the time it takes, we use the formula:
[tex]\text{Time} = \frac{\text{Total Words}}{\text{Words Per Minute}}[/tex]
Let's plug in the values:
[tex]\text{Time} = \frac{720\text{ words}}{80\text{ words per minute}}[/tex]
Now, we perform the division:
[tex]\text{Time} = 9 \text{ minutes}[/tex]
Therefore, it will take Wendy 9 minutes to type the document.
The correct answer is option D) 9 minutes.