Answer:
D
Step-by-step explanation:
C=0.05M+40
Cost = 5 cents per minute plus 40 dollars
Answer:
64.5%
Step-by-step explanation:
Initial amount N° = ?
Remaining amount after decay = N = ?
k = decay constant = 0.00012 
t = time = 3650 year
fraction remaining will be N/N°
From the decay equation, N = N°
N/N° = 
N/N° = 
N/N° = 
N/N° = 0.645 = 64.5%
Did you ever get it right? I need help
(8 plus of minus radical 64 + 216
divided by
6
(8 + or - 16.73320053)/6