7. B) 50-202
To calculate the corresponding demand function:
1. First, identify where the price variable in the marginal revenue function is (in this case, Q).
2. Then, rearrange the marginal revenue function as MR=50 - 6Q
3. To find the corresponding demand function, we need to isolate Q and write the demand function in the form:
$$Q = function of MR$$
4. After some calculations, we can arrive at $$Q = \frac{MR}{6} + \frac{50}{6}$$