He would need to exercise for approximately 14 minutes to get to 120 bpm
20 and 19 because you just need to follow the pattern.
Answer:
ok so anything raised to the power 0 is equal to 1 so we'll take 9x^0 =1 and then let's solve
Step-by-step explanation:
3x^2(9x)^0
3x^2(1)
=3x^2
Answer:

Step-by-step explanation:
Newton's cooling model is:

Where
t is the time in hours
is the ambient temperature
is the initial temperature of the body

We know that:


Then after 7 hours the temperature of the liquid will be:

