1. The annual passenger revenue of a rail transport corporation from the year
2000 to the year
2020 is modeled by the formula
=−20|−15|+1,010 where is the annual revenue in million dollars and is the number of years since
2000. Select all the years where the passenger revenue was $930 million.
2. An electrical parts manufacturing company produces resistors of resistance
700 ohms and they guarantee that the variations will stay within a range of
±5%. Which equation can be used to find the lowest and highest resistance that can be achieved?
