Answer:
250 units manufactured for maximum revenue
Maximum Revenue Generated: $12500
Explanation:
R'(x) = 0 gives us the maximum value for revenue
Differentiating the expression (using the power rule) gives us R'(x)

250 units are needed to generate maximum revenue
Substitute 250 back into R(x) to find the maximum revenue in dollars
R(250) = 100(250) - 0.2(250)²
R(250) = 12500
Maximum revenue is $12500