5 = p/4
To solve for P, multiply both sides by 4:
p = 5 x 4
p=20
Answer:
y = 2x - 1
Step-by-step explanation:
Given:
The initial mass of an element is 800 grams.
Decay rate = 8.2% per day
Number of days = 15
To find:
The remaining element after 15 days.
Solution:
The exponential decay model is
Where, a is the initial value r is the rate of interest and t is time period.
Putting in the above formula, we get
Therefore, the mass of the remaining element is 221.7 grams.
Either the second one or the third one.good luck !