A fast-food restaurant determines the cost and revenue m C = 0.5x + 7600, O s x $ 50,000 -(63,000x - x ), O's x $ 50,000 30,000 (a) Write the profit function for this situation. H P = 30000 + 1.6x - 7600 (b) Determine the intervals on which the profit f increasing (0,1600) X decreasing (1600.50000) X (c) Determine how many hamburgers the resta 1600 hamburgers