large die-casting machine used to make automobile engine blocks is purchased for $2.2 million. For tax purposes, the value of the machine can be depreciated by 7.3% of its current value each year. a. What is the value of the machine after 15 years? b. After how many years is the value of the machine 30% of its original value? a. Set up the equation that is needed to determine the value (in millions of dollars) of the machine after 15 years. 0.0 (Type integers or decimals rounded to four decimal places as needed.)