Solve the following equations a) 8eSt. = 25 (2 x 5=10 points) 1) No solution exists. (25/8) 2) 3) 0.2 *In (25/8) 4). 0.2 *Log (25/8) b) In (x+1)-In (5-x) = ln 9 1) -3.0 2) 5.0 3) 4.4 4) In (9/6) c) Carbon-14 has a half-life value of 5800 year. How old is the pyramid if a piece of wood found at pyramid site has lost 60% of its carbon-14? (10 points) 1) 9534 years 2) 1005 years 3) 7667 years 4) 7600 years