Mexican Migrant Workers In The 20th Century- What is the authors purpose for putting the word ""taking"" in quotation marks in paragraph 5 ? Cute evidence from the text in your response.

Plutonium–238 has a yearly decay constant of 7.9 × 10-3. if an original sample has a mass of 15 grams, how long will it take to decay to 12 grams? (at = a0e-kt) a. 3 years b. 12.3 years c. 28.3 years d. 139.1 years