Answer:
Option c) ![c=1.60d+2.5](https://tex.z-dn.net/?f=c%3D1.60d%2B2.5)
Step-by-step explanation:
Let
d -----> the distance in miles
c ----> the cost in dollars
we have the ordered pairs
(3,7.30) and (8,15.30)
step 1
Find the slope of the linear equation
The slope is equal to
![m=\frac{15.30-7.30}{8-3}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B15.30-7.30%7D%7B8-3%7D)
![m=\frac{8}{5}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B8%7D%7B5%7D)
step 2
Find the equation of the line in point slope form
![c-c1=m(d-d1)](https://tex.z-dn.net/?f=c-c1%3Dm%28d-d1%29)
we have
![point\ (3,7.30)](https://tex.z-dn.net/?f=point%5C%20%283%2C7.30%29)
![m=\frac{8}{5}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B8%7D%7B5%7D)
substitute
![c-7.30=\frac{8}{5}(d-3)](https://tex.z-dn.net/?f=c-7.30%3D%5Cfrac%7B8%7D%7B5%7D%28d-3%29)
![c=\frac{8}{5}d-\frac{24}{5}+7.30](https://tex.z-dn.net/?f=c%3D%5Cfrac%7B8%7D%7B5%7Dd-%5Cfrac%7B24%7D%7B5%7D%2B7.30)
![c=1.60d+2.5](https://tex.z-dn.net/?f=c%3D1.60d%2B2.5)
<h3>
Answer: 1</h3>
=====================================================
Explanation:
We can rewrite 5 as 5s^0, since s^0 = 1 where s is nonzero.
Think of 2s as 2s^1
With those ideas in mind, the original polynomial turns into 5s^0 + 2s^1
Sorting the terms so that the largest exponent is first gets us the standard form 2s^1 + 5s^0
The largest exponent is the degree, so the degree is 1.
Side note: This trick only works for single variable polynomials.
<span>E=240T
For the lower limit of energy:
E=12,000 cal
so 12000 = 240 T >>> T = 50</span> degrees Celsius
<span>For the upper limit of energy:
E=18,000 cal
so 18000 = 240 T >>> T = 75 </span>degrees Celsius
The difference in temperature = 75 - 50 = 25 <span>degrees Celsius
</span>
I hope I helped
you.