Question

#1. The amount of radioactive isotope decays in half every 1 year. The amount of the isotope can be modeled by A. The starting amount of the isotope

B. The amount of the isotope after 1 year
C. The rate the isotope decreases
D. The number of years that have passed
#2. The population of a species of rabbit triples every year. This can be modeled by
f(x)=4(3)x and f(5)=972
What does the 5 represent? A. The starting population of the rabbits B. The population of the rabbits after 5 years C. The rat the population increases D. The number of years that have passed

Answer 1

The given statement: isotope decays in half every 1 year refers to the rate at which the isotope alters its value. In the second problem, the dependent variable is the number of years while the independent variable is the population of the rabbits. Hence, 5 should be D. The number of years that have passed.

Answer 2

1. The amount of isotope can be modeled by the rate the isotope decreases. The correct option among all the options that are given in the question is the third option or option "C".

2. In this question the "5" represents The population of the rabbits after 5 years. The correct option among all the options that are given in the question is the second option or option "B".