Answer
$158.3$
Work Step by Step
Here is the formula for the NFL rating:
$\text{Rating}=\dfrac{\left(250\cdot \frac{C}{A}\right) + \left(1000\cdot \frac{T}{A}\right) + \left(12.5 \cdot \frac{Y}{A}\right) +6.25-\left(1250\cdot \frac{I}{A}\right)}{3}$
where
A = attempted passes,
C = completed passes,
T= touchdown passes,
Y= yards gained passing, and
I = interceptions
Here are the maximums for each of the weighing factors:
$C/A= 0.775\\
T/A = 0.11875\\
Y/A = 12.5\\
I/A = 0.0995\\$
We want the lowest amount subtracted possible, so we will use $0$ for $\frac{I}{A}$ which is acceptable because $0.0995$ is the MAXIMUM, not the minimum.
Subsitutute each of these values into the rating formula above to obtain:
$\text{Rating}=\dfrac{250\cdot 0.775 +1000\cdot 0.11875 + 12.5 \cdot 12.5-1250\cdot 0}{3}=158.33\approx 158.3$