To find the weight of a cheetah that runs 7 miles using the line of best fit, we can substitute \( x = 7 \) into the equation \( y = 195 - 7.3x \).
Calculating it:
\[ y = 195 - 7.3(7) \] \[ y = 195 - 51.1 \] \[ y = 143.9 \]
So, the weight of a cheetah that runs 7 miles is 143.9 pounds.
Now, since 7 miles is outside the range of miles run in the dataset (which has values of only 1, 3, 5, 8, and 10), we are performing extrapolation, not interpolation.
Thus, the correct response is:
143.9 pounds and extrapolation.