58 Carbon-14 is used to estimate the age of organic compounds. Over time, carbon-14 decays at a continuous percent rate of 11.4% per thousand years from the moment the organism containing it dies. Carbon-14 is typically measured in micrograms. a. What quantities are changing in this situation? What quantities are not changing? b. Define a function that gives the amount, at any moment, of Carbon-14 remaining in a piece of wood that starts out with 150 micrograms of Carbon-14. (Remember that Carbon-14's decay rate is per thousand years.) c. Construct a graph of this function. Be sure to label your axes! d. What is the percent change every 1000 years? e. What is the percent change every 5000 years? Explain your reasoning