The cost function for a certain company is C = 40z + 300 and the revenue is given by R = 80z 0.5z2. Recall that profit is revenue minus cost. Set up a quadratic equation and find two values of z (production level) that will create a profit of $50. The field below accepts a list of numbers or formulas separated by semicolons (e.g. 2; 4; 6 or x + 1; z 1). The order of the list does not matter. To enter 4/a , type sqrt(a). Hint Penalty