# Math Help - Modelling Blood Pressure

1. ## Modelling Blood Pressure

A person’s blood pressure at time t (in seconds) is modelled by the function p = 100 + 18 sin 7t. How many heartbeats occur per minute?

This is how I approached it:

I found the maximum and minimum values for p. One heart beat would consist of the function reaching its maximum and minimum values once.

Then, I found a period of a heart beat by dividing 2*pi by 7.

So, to determine the number of heart beats per minute would I simple multiply 2*pi/7 by 60?

2. ## Re: Modelling Blood Pressure

Originally Posted by Manni
A person’s blood pressure at time t (in seconds) is modelled by the function p = 100 + 18 sin 7t. How many heartbeats occur per minute?

This is how I approached it:

I found the maximum and minimum values for p. One heart beat would consist of the function reaching its maximum and minimum values once.

Then, I found a period of a heart beat by dividing 2*pi by 7.

So, to determine the number of heart beats per minute would I simple multiply 2*pi/7 by 60?
one beat takes $\frac{2\pi}{7}$ seconds ...

try again

3. ## Re: Modelling Blood Pressure

Originally Posted by skeeter
one beat takes $\frac{2\pi}{7}$ seconds ...

try again
Oh right! Thanks for pointing that out