Assignment:
Q1. In 1994, the life expectancy of males in a certain country was 72.4 years. In 2000 it was 74.5. Let E represent the life expectancy in year t and let t represent the number of years since 1994. The linear equation that fits is E(t)= _t + _ please round to the nearest tenth.
Then use the equation to predict the life expectancy of males in 2003
E(9) =
Q2. Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40 mph and Train B at 60 mph. Train A passes a station at 9:15pm, if train B passes the same station at 9:27 pm at what time will train B catch up to train A?
Q3. The width of a rectangle is fixed at 18cm. What lengths will make the perimeter greater than 76 cm?
Provide complete and step by step solution for the question and show calculations and use formulas.