The graph of the revenue function f(x) = –2x2 + 100x is shown to the left. In the function, revenue is dependent on the number of items sold, x. How do the mathematical and reasonable domains compare? mathematical: −[infinity] < x < [infinity] reasonable: 0 ≤ x ≤ 1250 mathematical: x ≤ 1250 reasonable: 0 ≤ x ≤ 50 mathematical: −[infinity] < x < [infinity] reasonable: 0 ≤ x ≤ 50 mathematical: x ≤ 1,250 reasonable: 0 ≤ x ≤ 1,250.