code in python a.) Suppose that x and y are variable names that already refer to Boolean values. Write an expression (not a statement!) that evaluates to True iff x or y, but not both, are True. b.) Suppose that x, y, and z are variable names that already refer to Boolean values. Write an expression (not a statement!) that evaluates to True iff at least one of the three variables (x, y, z) is False.

- The circumference of Earth changes with latitude --- it is maximum at the Equator and zero at the poles. Write the python syntax for how the circumference changes with latitude - Be creative and speculate how the latitudinally varying surface area is used to calculate the global mean temperature.

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Research current rates of monetary exchange. Draw a flowchart and write the variable declaration to represent the logic of a program that allows the user to enter a number of dollars and convert it to Euros and Japanese yen. I. Draw a flowchart and write the variable declaration to represent the logic of a program that allows the user to enter values for a salesperson's base salary, total sales, and commission rate. The program computes and outputs the salesperson's pay by adding the base salary to the product of I. the total sales and commission rate.