Acertain 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. which statement describes how the reasonable domain compares to the mathematical domain? the reasonable domain is restricted to integers. the reasonable domain is restricted to positive real numbers. the reasonable domain has a minimum value of 1,500. the reasonable domain has a maximum value of 1,500