What is the difference between a traditional ira account and a roth ira account?

Brice is going to purchase a hi-def, flat-screen tv. he has decided on everything except the screen size. the unit with the 42-inch screen costs $600 while the unit with the 47-inch screen costs $750. in making this decision, which concept should brice use? a. time value of money b. marginal tax rates c. marginal utility d. total utilit