A race car driver’s goal is to complete a 1000-kilometer auto race in 4 hours or less. The driver’s average speed is 4200 meters
per minute. Does the driver meet the goal? If not, how much faster
(in meters per minute) must the driver be to meet the goal?

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

How is this equation completed? i cannot find any examples in the book.

According to a study done by de anza students, the height for asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. suppose one asian adult male is randomly chosen. let x = height of the individual. a) give the distribution of x. x ~ b) find the probability that the person is between 64 and 69 inches. write the probability statement. what is the probability?