Hi I need help on what is the answer to this problems? Below is the question and other concerns will be in the comment section. I hope you can help me and surely I will give you full positive feedback.

For numbers 4 to 8. A monopolist faces a demand function, p = 43 - 4x, where p is measured in thousand pesos per unit. It has a constant marginal cost of PhP3 per unit and a fixed cost of P19. Assuming that the monopolist maximizes profit, determine the following: 15. The total revenue function is TR(x) = 43x - 4x. 16. The total cost function is TC(x) = 3x -19. 17. 5 units will maximize profit 18. The market equilibrium price is P13 19. The consumer surplus is P45.7) Suppose the supply and demand curves for a certain commodity is given by p = x* - x + 1 and p = 17 - x, respectively. (10 points) a. Find the market equilibrium quantity and the market equilibrium price. b. Find the consumer surplus under perfect competition. c) Find the producer surplus under perfect competition. 8) The marginal revenue and the marginal cost functions for manufacturing a certain product are MR(x) = 150 -x and MC (x) = _ I'-4x+110 respectively, and the total cost of producing 30 units is P3000. Determine the following: in (14 points) a) Total revenue, demand, total cost and total profit functions. b) What is the total profit of producing and selling 30 units? Find the total area of the region bounded by x - axis and the graph of y = x + x - 6x