The function is a quadratic function, then the domain will be all real numbers. Then the correct option is D.
<h3>What are domain and range?</h3>The domain means all the possible values of x and the range means all the possible values of y.
The function is given below.
y = -2x² + 50x + 300
Then the function is a quadratic function, then the domain will be all real numbers.
Then the correct option is D.
More about the domain and range link is given below.
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