A certain element has a half-life of 69 years. An experiment starts with 1,500 grams of the element. The amount of the element remaining x years after the experiment began can be modeled with the function f(x) = 1,500(2)–x/69. The mathematical domain of the function is all real numbers.
Answer
A
The reasonable domain is restricted to integers.
B
The reasonable domain is restricted to positive real numbers.
C
The reasonable domain has a minimum value of 1,500.
D
The reasonable domain has a maximum value of 1,500.