A couple of Exponential Functions Questions
8). The oldest rock knows to data found in Minnesota contains 2g of carbon 14(C^14). Using geological methods toestimate the original size of the rock, scentists estimate it to originally have contained 4.096kg of C^14 .The Half-life of c^14 is 5760 years.What is the approximate age of rock?
9). Land developers had to delay a housein development because the land had been previously used as a nucleur waste pit for Radium-D, an isotope has decayed to 1/√2 of its original. When could they build ifRadium-D has a half life of 22 years.
both use the y=ka^x, i just cant seem to get the answer right when i plugin the values its prol cuz i subed it in wrong,if some1 cud kindly help me it wud be apreciatted.