Solve the Problem. -The Function Models the Amount in Pounds of a Pounds

Multiple Choice

Solve the problem.
-The function models the amount in pounds of a particular radioactive material stored in a concrete vault, where t is the number of years since the material was put into the vault. If 400 pounds of the
Material are initially put into the vault, how many pounds will be left after 190 years? Round to the nearest
Pound.

A) 422 lb
B) 95 lb
C) 288 lb
D) 93 lb