Hi there, can someone explain the equation so that I can solve any question like this strategy or even different (let's say long put 75, two short put 95).

Consider a strategy that involves one long $80-strike call and two short $100 strike calls. The following table gives the premium for each call: (a) What is the cost of this strategy? (1 marks) (b) Draw the net profit pattern of this strategy by showing: ( 3 marks) - The maximum profit - The maximum loss - The break-even points