Question 863090
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Hi
profit P(x),in thousands of dollars, for a firm when it sells x thousand units
 p(x)= -x^2+30x-50
a) What is the firm profit when it sells 1000 units: p(1) = 29-50 = -$21,000
b) What is the firms profit when it sells 10,000 units: p(10) = $150,000
c) how many units must the firm sell to break even: 1772 units
-x^2+30x-50 = -(x-15)^2 + 175
x = 1.77124, 28.22875
 *[invoke quadratic "x", -1, 30, -50]