3. Mr. G's phone's battery runs out on a road trip in the middle of Arizona. (Great place to be lost right?) He heads 40mi south and 82mi east before getting turned around and heads 19mi west and 97mi north.
Finally he remembers he has a phone charger and starts charging his phone. Identify how far he's gone
and how much farther he needs to go if he needed to go 345mi east and 162mi south from his starting
position

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?