Hello everybody, can you guys help me with this questions with the image below, please:

2. [15 points] Gamaleya Institute in Moscow claims to be first pharmaceutical company to have created a vaccine for Covid-19. Accordingly, the firm plans to sell its vaccine in two different markets: domestic and foreign. The corresponding demand functions are P1 + 21221 = 100 (1) 2P2 + Q2 2 2a (2) The total cost function is TC = 500 + 10Q (3) Where o Equation 1 is the domestic market o Equation 2 is the foreign market O Q=Q1+Q2 o a is a positive constant. (a) Determine, in terms of a, the prices needed to maximise prot o with price discmjnation o without price discrimination. (b) Show that the prot with price discrimination is always greater than the prot without discrimi- nation, irrespective of the value of a