19. Which of the following functions grows faster (if neither, write "NEITHER"). y = log³ x vs. y = log4 x

The function f(x)=ex is called the___________ Exponential function. The number eis approximately equal to________.

The half-life of plutonium-244 is 80,000,000 years. Find function gives the amount of carbon-14 remaining as a function of time, measured in years.

A radiation safety officer is working with 112 grams of a radioactive substance. After 17 days, thesample has decayed to 80 grams. Rounding to fivesignificant digits, write an exponential equationrepresenting this situation. To the nearest day, whatis the half-life of this substance?