Answer:
To solve this problem, we need to use the following formula
![d=\sqrt{(3h)/(2) }](https://img.qammunity.org/2019/formulas/mathematics/high-school/ojeeoz3bksvw8h4czqh0wtkofpvy71myi1.png)
Where
is the eye-level height and
is the horizontal distance to the horizon.
For Pam, we know that
,
![d=\sqrt{(3(256))/(2) }=√(384) \approx 19.6](https://img.qammunity.org/2019/formulas/mathematics/high-school/ft6sb8g43o2rje1nrpyp9er2pbt0zrfu4i.png)
She can see around 19.6 feet to the horizon.
For Adam, we know that
![h=400 ft](https://img.qammunity.org/2019/formulas/mathematics/high-school/195gh6pf9ihsppghy82rzsp1zqd68r0lq3.png)
![d=\sqrt{(3(400))/(2) }=√(600) \approx 24.5](https://img.qammunity.org/2019/formulas/mathematics/high-school/ysxvdq5x71vwefn07y3afvtem34qi7vr0n.png)
He cansee around 24.5 feet to the horizon.
Now, the difference is
![\Delta d= d_(Adam) -d_(Pam) \\\Delta d= 24.5 - 19.6 = 4.9](https://img.qammunity.org/2019/formulas/mathematics/high-school/rgx9w51e715j6fe5tng6o89f07uofgkg2i.png)
Therefore, Adam can see 4.9 feet much farther than Pam.
Additionally, the expression that models this situation is
![\Delta d= d_(Adam) -d_(Pam)](https://img.qammunity.org/2019/formulas/mathematics/high-school/6cib4uunk5rwoh2eawn7fljeorozrovyw0.png)