2
QuizMultiple Choice
Rewriting Exponential Functions
Question 2 of 10 • SSCR 26 Math Essentials B
The function gives the mass, m, of a radioactive substance remaining after h half-lives. Iron has a half-life of 2.7 years. Which equation gives the mass of a 200 mg Iron sample remaining after y years, and approximately how many milligrams remain after 12 years?
Answer
;
; 1.7 mg
;
; 30.8 mg
;
; 3.2 mg
;
; 9.2 mg