Answer:

Step-by-step explanation:
Given function:

As per question statement:
Initial temperature of bottle is 70
.
i.e. when time = 0 minutes, f(t) = 70 

After t = 3, f(t) = 42

Hence, the value is:

The first one is 2,314,572,763 the other one is 7,156,134,563
Answer:
Step-by-step explanation:
(pk) * r = p * (kr)
Answer:
Step-by-step explanation: