Our original equation:

Now, we just solve for k:
When we use PEMDAS, we get this equation:

Now, subtract 248 from both sides:

Now, divide -4 on both sides:

The answer to your problem is
k = 58.5 or k = 117/2. Hope this helps and have a fantastic day!
The degrees of freedom in a regression model is 2 if the model that has 10 observations and 7 independent variables.
<h3>What is a degree of freedom?</h3>
The amount of rows of training data used to fit the model equals the degrees of freedom.
Total observation = 10
Number of independent variables = 7
Degree of freedom for regression = 10 – 7 - 1
= 2
Thus, the degrees of freedom in a regression model is 2 if the model that has 10 observations and 7 independent variables.
Learn more about the degree of freedom here:
brainly.com/question/14222862
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