The amount of a sample remaining after t days is given by the equation p(t)= a(1/2)^t/h where a is initial amount of the sample and h is the half life in days of the substance. a sample contain 60% of its original amount of fermium-257. the half time of fermium-257 is about 100 days. about how old is the sample

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Hormones perform important functions within the reproductive system. during puberty, a number of changes occur in the body. which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.