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For this case, the average is the sum of the amounts of the three days divided by three.
We know the earn of Friday and Saturdar. We can assign x to the earn of saturday.


We need to multiply by 3 both sides of the equation.

2181 USD + x USD =300 USD
We need to substrat 2181 USD in both sides.
2181 USD - 2181 USD + x USD =300 USD - 2181 USD
x USD =300 USD - 2181 USD
x USD = - 1881 USD
They need a negative earn in order to have an average earn of 100 USD per day.
1073 USD + 1108 USD - 1881 USD = 300 USD
300 USD / 3 = 100 USD
![[tex]2181 USD - 2181 USD+ xUSD =3100 USD - 2181 USD](https://tex.z-dn.net/?f=%5Btex%5D2181%20USD%20-%202181%20USD%2B%20xUSD%20%3D3100%20USD%20-%202181%20USD%20)
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Answer: 2
Step-by-step explanation:
This is a direct proportion. Since y varies as x. This will be:
y = kx
where,
y = 9
x= 3
9 = 3k
k = 9/3
k = 3
Find x when y=6
y = kx
6 = 3x
x = 6/3
x = 2
It is similar to the denominator and the numerator
Answer:
B
Step-by-step explanation:
The first thing the man needs to do
Is to arrange the books by Abraham Lincoln amongst each other first. Now the number of ways the man can arrange these books amongst each other is a total of 4! Ways. Now there are 6 books remaining and there are also six slots remaining. The number of ways to arrange these six books within theirselves would be 6!
Now the total
Number of arrangements is 6! * 4!