Your teacher surveyed the class to determine the number of hours that each student spent on social media.
Your teacher created a table and scatterplot graph that displayed the number of hours, , and the average final grade percentage, y, based on the hours. Using the equation of the trend line of the data, y =7.2x + 98.9, predict the average final grade percentage, to the nearest whole number, if a student spent 10 hours on social media. (1 point)
• The average final grade is 7.2 if a student spent 10 hours on social media.
• The average final grade is 27% if a student spent 10 hours on social media.
• The average final grade is 92% if a student spent 10 hours on social media.
• The average final grade is 99% if a student spent 10 hours on social media.
Using the equation of the trend line, y = 7.2x + 98.9, where x is the number of hours, we can substitute x = 10 to find the predicted average final grade percentage:
y = 7.2(10) + 98.9
y = 72 + 98.9
y = 170.9
Rounding to the nearest whole number, the predicted average final grade percentage is 171.
Therefore, the correct answer is: The average final grade is 171% if a student spent 10 hours on social media.
Not that I’d not one of the answer choices
I apologize for the confusion. Unfortunately, without the correct answer among the given options, it is not possible to provide the correct response.
To predict the average final grade percentage if a student spent 10 hours on social media, we need to substitute the value of x (hours spent on social media) as 10 into the equation of the trend line.
The equation of the trend line is given as y = 7.2x + 98.9.
Now, substitute x = 10 into the equation:
y = 7.2(10) + 98.9
y = 72 + 98.9
y = 170.9
Rounding this value to the nearest whole number, the predicted average final grade percentage for a student who spent 10 hours on social media is 171.
Therefore, none of the options provided (27%, 92%, 99%) is correct.