29*2.4-36.5= 33.1 hrs before the freight train cought up.
Answer:

General Formulas and Concepts:
<u>Calculus</u>
Antiderivatives - Integrals
Integration Constant C
Integration Property [Multiplied Constant]: 
Trig Integration: 
U-Substitution
Step-by-step explanation:
<u>Step 1: Define</u>

<u>Step 2: Identify Substitution Variables</u>
u = 3x
du = 3dx
<u>Step 3: Integrate</u>
- [Integral] Rewrite:

- [Integral] U-Substitution:

- [Integral] Trig Integration:
![\displaystyle \frac{1}{3}[-cos(u)] + C](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7B1%7D%7B3%7D%5B-cos%28u%29%5D%20%2B%20C)
- [Expression] Multiply:

- [Expression] Back-Substitute:

Answer:
Step-by-step explanation:
(-4,0) ; (-7, -14)
![d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}\\\\ =\sqrt{(-7-[-4])^{2}+(-14-0)^{2}}\\\\ =\sqrt{(-7+4)^{2}+(-14)^{2}}\\\\=\sqrt{(-3)^{2}+(-14)^{2}}\\\\=\sqrt{9+196} \\\\=\sqrt{205} \\\\=14.3178](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%28x_%7B2%7D-x_%7B1%7D%29%5E%7B2%7D%2B%28y_%7B2%7D-y_%7B1%7D%29%5E%7B2%7D%7D%5C%5C%5C%5C%20%3D%5Csqrt%7B%28-7-%5B-4%5D%29%5E%7B2%7D%2B%28-14-0%29%5E%7B2%7D%7D%5C%5C%5C%5C%20%3D%5Csqrt%7B%28-7%2B4%29%5E%7B2%7D%2B%28-14%29%5E%7B2%7D%7D%5C%5C%5C%5C%3D%5Csqrt%7B%28-3%29%5E%7B2%7D%2B%28-14%29%5E%7B2%7D%7D%5C%5C%5C%5C%3D%5Csqrt%7B9%2B196%7D%20%5C%5C%5C%5C%3D%5Csqrt%7B205%7D%20%5C%5C%5C%5C%3D14.3178)
Answer:
P=$25231.29
Step-by-step explanation:
P=A / ( 1 + rt)
11/8 , or 1.3 if your solving for x...