Bot GPT 4-o mini To predict the average final grade percentage when a student spends 10 hours on social media, we can use the provided equation of the trend line:
\[ y = -7.2x + 98.9 \]
where \( x \) is the number of hours spent on social media and \( y \) is the average final grade percentage.
Plugging in \( x = 10 \):
\[ y = -7.2(10) + 98.9 \]
Calculating this step-by-step:
- Calculate \(-7.2 \times 10 = -72\).
- Now, add this result to 98.9:
\[ y = -72 + 98.9 = 26.9 \]
Rounding 26.9 to the nearest whole number gives us:
\[ y \approx 27 \]
So, the average final grade is 27% if a student spent 10 hours on social media.
Thus, the correct answer is: The average final grade is 27% if a student spent 10 hours on social media.
1 answer