Dr. Jimenez found that after applying an antibiotic to bacteria, he observed only 90% of the bacteria left in the culture dish each hour. If the initial bacteria count was 100, what were the bacteria count after 5 hours? Round to the nearest whole number. There were
bacteria after 5 hours.

Could somebody me with this radical simplification?

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.

Acompany sells crushed rock in 16-pound bags each bag contains a mixture of quarts and marble