Can someone explain thoroughly the variable expenses

Andrea cujoli is a currency speculator who enjoys "betting" on changes in the foreign currency exchange market. currently the spot price for the japanese yen is ¥129.87/$ and the 6-month forward rate is ¥128.53/$. andrea would earn a higher rate of return by buying yen and a forward contract than if she had invested her money in 6-month us treasury securities at an annual rate of 2.50%. true/false?

John's pizzeria and equilibrium john is selling his pizza for $6 per slice in an area of high demand. however, customers are not buying his pizza. using what you learned about the principles of equilibrium, write three to four sentences about how john could solve his problem.

Tubby toys estimates that its new line of rubber ducks will generate sales of $7.60 million, operating costs of $4.60 million, and a depreciation expense of $1.60 million. if the tax rate is 35%, what is the firm’s operating cash flow? (enter your answer in millions rounded to 2 decimal places.)