If 96 grams of carbon-14 are originally present in a fossilized plant at the present time, how much will remain after 17,000 years? (the half-life of carbon-14 is 5730 years.) use the exponential decay model for carbon-14: a=)t

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.