Evaluate each absolute value expression. a. |54| b. -|-7 3/5 | c. |3|-|-1 d. |2.2-5.13 |

Situation: find the age of the skull to the nearest year, enter the correct answer. a hiker in africa discovers a skull that contains 32% of its original amount of c- 14. done n = noekt 00000 no = inital amount of c-14 (at time t = 0) n = amount of c-14 at time t k = 0.0001 t = time, in years