I've been solving this problem for ages. I need help

(1 point) A graph of Q = 243012: is given in the figure. (a) What is the initial value of Q (when t = 0)? Q(0) = _ help (numbers) (b) This quantity decays at a continuous rate of % help (numbers) (0) Use the graph to estimate the value of twhenQ=8. . '1 6 9* 1:\" 12 1:\" t m C] help (numbers) (d) Use logs to find the exact value of I when Q = 8. t = 9.1551024 help (logarithms) (Click on graph to enlarge)