Consider an employee's whose earnings, in dollars, are according to the continuous stream f(t)=5,000e0.1t for t> 0, where t is measured in years. how many years will it take them to earn a combined total of $100,000? give your answer in years to the nearest year.

The local grocery store wants to know if the shoppers prefer Crest or Colgate toothpaste. The store gives all of its shoppers a value saver card, then uses a random number generator to select 30 card numbers and surveys those shoppers. Is this sampling method representative of the entire population and explain?

A. No, some shoppers may not buy toothpaste there.