Answer: f(0) = 6.
Explanation:
Ther ordered pairs are: (x,y) or (x, f(x) )
So, (1,0) means that f(1) = 0 which denies the fourth choice.
(-10,2) means that f(-10) = 2 which denies the first choice
(0,6) means that f(0) = 6, which is the third choice. So, that is the true equation.
To solve this problem you must apply the proccedure shown below:
1. You must apply the Law of Cosines, as you can see in the figure attached. Then:
- The first ship travels at
in for two hours. Therefore, the side
is:
![a=(27 mi/hr)(2 hr)=54mi](https://tex.z-dn.net/?f=%20a%3D%2827%20mi%2Fhr%29%282%20hr%29%3D54mi%20)
- The second ship travels at
for
. Therefore, the side
is:
![b=(18mi/hr)(1.5hr)=27mi](https://tex.z-dn.net/?f=%20b%3D%2818mi%2Fhr%29%281.5hr%29%3D27mi%20)
- Now, you can calculate
:
![c=\sqrt{54^{2}+27^{2}-2(54)(27)Cos(55)}=44 mi](https://tex.z-dn.net/?f=%20c%3D%5Csqrt%7B54%5E%7B2%7D%2B27%5E%7B2%7D-2%2854%29%2827%29Cos%2855%29%7D%3D44%20mi%20)
The answer is: ![44 miles](https://tex.z-dn.net/?f=%2044%20miles%20)
For example #1 is 3/4 since there is no whole number but but for #3 1 and 1/8
-1.1 should be the right answer