Solve the Problem. -Strontium 90 Decays at a Constant Rate of 2.44% Per

Multiple Choice

Solve the problem.
-Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is P = P0 e-0.0244t. How long will it take for 15 grams of strontium to decay to 5 grams? Round
Answer to 2 decimal places.

A) 40.50 years
B) 450.25 years
C) 45.03 years.
D) 4.50 years