Question

HELPhelp ASAP)If a substance has a half-life of 45 days, how much of the original substance would be left after 90 days?
A.One half (1/2)
B.One quarter (1/4)
C.One eighth (1/8)
D.One tenth (1/10)

Answer 1

Answer:

B.

Explanation:

if it is half life at 45 it is 1/4 at 90

Answer 2

B : One quarter (1/4 )