A certain radioactive substance has a half-life of 75 hours. Find how long it will take, to the nearest hour, for 75% of the radioactivity to be dissipated if the amount of material x satisfies (t in hours). Round your answer to the nearest hour.
A)182 hours
B)171 hours
C)157 hours
D)150 hours
E)31 hours

Question

A certain radioactive substance has a half-life of 75 hours. Find how long it will take, to the nearest hour, for 75% of the radioactivity to be dissipated if the amount of material x satisfies  (t in hours). Round your answer to the nearest hour. ​
A)182 hours 
B)171 hours 
C)157 hours 
D)150 hours 
E)31 hours

Quizplus · Accepted Answer

The Answer of A certain radioactive substance has a half-life of 75 hours. Find how long it will take, to the nearest hour, for 75% of the radioactivity to be dissipated if the amount of material x satisfies  (t in hours). Round your answer to the nearest hour. ​
A)182 hours 
B)171 hours 
C)157 hours 
D)150 hours 
E)31 hours

A Certain Radioactive Substance Has a Half-Life of 75 Hours