I would like to know how to solve C).

The answers to A) and B) are posted here for your reference in solving them.

The football player Rheuma Kai has the choice between two contracts. The first contract guarantees a safe annual salary of 240,000 Euro. The second one pays based on his performance. If his team wins the championship with a probability of 30%, he will receive 450,000 Euro, or otherwise only 150,000 Euro. His utility function is estimated as: (piecewise defined) u(x)=10001x21+(302000x2000)23,0x250000,250000x500000 a) How high is his expected salary in both cases? b) Which contract will he choose? c) How high should the safe salary be, so that he will choose against the performancebased contract? 00)=10001240,000,u(450,000)=21+(396850450.000250.000)23 b)E[L1]=10001240000=0.49E[Lx]=0.7(10001150000)+0.3(21+396050450000200000)3/2=0.53E[L2]>E[L1]ChooseL2(performancebased)