Systolic blood pressure, the higher number in a blood pressure reading, is measured as your heart muscle contracts. The inequality P ≤ ½a + 110 gives the normal systolic blood pressure, P, based on age, a, (in years).
At age 30, does 125 represent a maximum or minimum systolic pressure?

Question

Systolic blood pressure, the higher number in a blood pressure reading, is measured as your heart muscle contracts.  The inequality P ≤ ½a + 110 gives the normal systolic blood pressure, P, based on age, a, (in years).
At age 30, does 125 represent a maximum or minimum systolic pressure?

anonymous · Answer

Please help me anyone....

anonymous · Answer

Please I really need help!

anonymous · Answer

Please help! I really need to submit this question 
to my teacher!

anonymous · Answer

Can you help me?

anonymous · Answer

I don't know the answer at all, very sorry.

anonymous · Answer

It's ok

anonymous · Answer

It says that P is based on a (age) so a would be the age. You said you were 14, did you mean that YOU are 14, or is that supposed to be the age to plug into a?

anonymous · Answer

You are supposed to plug that into a

anonymous · Answer

Okay! I can help you with this, let me draw it out hold on : )

anonymous · Answer

Ok

anonymous · Answer

|dw:1382551049864:dw|

So you have the equation P ≤ ½a + 110
If you know that a is 14, you can plug 14 into where a is, so now it will be:

P ≤ 1/2 (14) + 110

Half of 14 is 7 so:

P ≤ 7 + 110  

Now add the right side to get: P ≤ 117
Hope that helps.