Answer:
<u>8064 pounds</u> of hay a group of 24 cows can eat in two weeks.
Step-by-step explanation:
Given:
Some animals on farms eat hay to get energy. A cow can eat 24 pounds of hay each day.
Now, to find how many pounds a group of 24 cows can eat in two weeks.
In 1 one day a cow can eat hay = 24 pounds.
Number of cows = 24.
Number of days in 2 weeks = 7 ×2 = 14.
Now, the expression of getting the pounds of hay a group of 24 cows can eat in two weeks is:
24 ( 24 × 14 ).
<u><em>So, to evaluate the expression:</em></u>
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=<em> </em>
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= 
Therefore, 8064 pounds of hay a group of 24 cows can eat in two weeks.
1. Is 124 days
2. ia 200,000,000
Ur welcome
Answer:
a)
b) r =-0.932
The % of variation is given by the determination coefficient given by
and on this case
, so then the % of variation explained by the linear model is 86.87%.
Step-by-step explanation:
Assuming the following dataset:
Monthly Sales (Y) Interest Rate (X)
22 9.2
20 7.6
10 10.4
45 5.3
Part a
And we want a linear model on this way y=mx+b, where m represent the slope and b the intercept. In order to find the slope we have this formula:
Where:
With these we can find the sums:
And the slope would be:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by:
Part b
For this case we need to calculate the correlation coefficient given by:
So then the correlation coefficient would be r =-0.932
The % of variation is given by the determination coefficient given by
and on this case
, so then the % of variation explained by the linear model is 86.87%.
Answer:

Step-by-step explanation:
Let
n -----> number of tickets
C ----> represent the cost of buy n tickets online
we have the ordered pairs
(1,16.50) and (2,30.50)
<em>Find out the slope of the linear equation</em>
The formula to calculate the slope between two points is equal to
substitute the values
<em>Find the equation of the line in slope intercept form</em>

we have

substitute



substitute

The domain of the function is all positive integers (whole numbers) including zero
{0,1,2,3,4,...}