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## Question:

Air pressure may be represented as a function of height above the surface of the Earth as shown below. P(h)=PoE^-.00012h In this function, P0 is air pressure at sea level, and h is measured in meters. Which of the following equations will find the height at which air pressure is 65% of the air pressure at sea level? A. Po=.65PoE^-.00012h B. .65Po=PoE^-.00012h C. .65=h*e^-.00012 D. h=.65e^-.00012

## Answer:

The **equation **that will find the **height **at which **air pressure **is **65%** of the **air pressure **at **sea** **level** is and this can be determined by using the **given data**.

Given :

- Air pressure may be represented as a function of height above the surface of the Earth .
- In this function is the air pressure at sea level, and ‘h’ is measured in meters.

The following steps can be used in order to determine the equation that will find the height at which air pressure is 65% of the air pressure at sea level:

- Step 1 – According to the given data,
**air pressure**as a**function**of**height**is given by:

—** (1)**

- Step 2 – It is also given that
**air pressure**is**65%**of the air pressure at**sea level**.

- Step 3 – Now,
**substitute**the**expression**of**P(h)**in the expression (1).

Therefore, the **correct **option is **B)**.

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