Answer:
(a) 
(b) There will be 1lb left after 14 hours
Step-by-step explanation:
Solving (a): The equation
Since the substance decomposes at a proportional rate, then it follows the following equation

Where
Initial Amount
rate
time
Amount at time t
Solving (b):
We have:



First, we calculate k using:

This gives:

Substitute: 

Divide both sides by 4

Take natural logarithm of both sides

This gives:

Solve for k


So, we have:


To calculate the time when 1 lb will remain, we have:

So, the equation becomes

Divide both sides by 8

Take natural logarithm of both sides


Solve for t


--- approximated
I think it’s h=64m because it just makes sense the most
Answer:
138 apples
Step-by-step explanation:
7x12=84
9x6=54
84+54=138