Suppose the individual demand equation for bananas is and the individual supply equation is expressed as a....

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c. The simplest part is finding the equilibrium point "mathematically" (it is better to say "algebraically"). For this, we have to equate and This is a simple linear equation that becomes and (units are probably $/kg). The supply and demand are both equal to at this point. We obtain the same result looking at a graph.

b. The graphs are simple, too. They are both straight lines. Please look at this link: https://www.desmos.com/calculator/zngt7rj9fr

a. The schedule is simply a table that lists some possible price () values and the corresponding and values. We may choose the step between the values. Let it be 1 $/kg:

       

  1       40      10

  2       30      20

  3       20      30

  4       10      40

You can extend this table with values 0.5, 1.5 and so on.