The decay rate of a certain new cell phone is 0.333
For given question,
The average lifetime of a certain new cell phone is three years.
The manufacturer will replace any cell phone failing within two years of the date of purchase.
Also, the lifetime of these cell phones is known to follow an exponential distribution.
We need to find the decay rate.
We know that an exponential decay is the process of reducing an amount by a consistent percentage rate over a period of time.
since the average lifetime of a certain new cell phone is three years, the decay rate would be 1/3 = 0.333
Therefore, the decay rate of a certain new cell phone is 0.333
Learn more about the decay rate here:
brainly.com/question/12224278
#SPJ4
Answer:
Friday
Step-by-step explanation:
Answer:
Combine like terms
4r+2=-2
Subtract 2 from both sides
4r=-4
Divide 4 by from both sides
r=-1
1. 7 bags
2. 20 ounces
3. 3 days
4. 3.6 inches
5. 9/10 of a bale of hay
