A sample of a radioactive isotope had an initial mass of 700 mg in the year 1991 and decays exponentially over time. A measurement in the year 1996 found that the sample's mass had decayed to 210 mg. What would be the expected mass of the sample in the year 2003, to the nearest whole number?

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no