Answer:
2.8+.55x=5 x=4
Step-by-step explanation:
5-2.8=2.2
2.2/.55=4
Answer:
and 
Step-by-step explanation:
The equation of the isotope decay is:

14-Carbon has a half-life of 5568 years, the time constant of the isotope is:


The decay time is:
(There is no a year 0 in chronology).

Lastly, the relative amount is estimated by direct substitution:





Answer:
50
Step-by-step explanation:
Answer:
f(3)= 5(3)-8= 15-8= 7
f(0)= 5(0)-8= 0-8= -8
f(4z)= 5(4z) - 8 = 20z - 8