Since, it is not given how many coins did Erica buy at the coin show, so, we can suppose that Erica bought "n" coins from the coin show.
Now, we know that Erica already had 6 coins in her coin collection before she went to the coin show and bought the "n" coins.
Therefore, the total number of coins that Erica will have in her possession after buying "n" coins from the coin show will be 6+n.
By the law of cosines, the angle

satisfies

which reduces to

which converts to approximately 77 degrees (this can be done my multiplying by 180 and dividing by pi).
Answer: 3
Step-by-step explanation: the answer is 3 believe me
Answer:
-4
Step-by-step explanation:
its closer to -4
The cost of renting the car every day is going to be y=18n+120 so if you plug 8 into n you get 264