In engineering economy, the most important tense almost all exercises deal with is the future. Question 1 Not yet answered Marked out of 1.50 Select one: O True O False P Flag question uncertainty factors and quality are the defining aspects of any investment project Question 2 Not yet answered Marked out of 1.50 Select one: O True O False P Flag question +$20,000 to +$85,000 per month in sales for extended battery life samsung products is considered as revenue Question 3 Not yet answered Marked out of 1.50 Select one: O True P Flag question O False