Alife insurance company sells a $100,000 one year term life insurance policy to a 30-year old male for $475. the probability that the male survives the year is .999172. find the expected value for the insurance company.

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

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?

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.