Answer:
$25.50
Step-by-step explanation:
15% of 30
.15 times 30
(.15 times 30) subtracted from 30
25.5
The linear regression model gives mathematical relationship between two variables, the dependent<em> and </em>independent<em> variables</em>. The linear models between the <em>quantity sold and the variables average price, disposable income and monthly advertising are</em> :
- <em>y = - 4713.46x + 117763</em>
- <em>y = 2.94x - 58384</em>
- <em>y = - 1.75x - 32655</em>
To create a linear model using the data given, we use technology such as a excel or a linear regression calculator :
The linear model created using a linear regression calculator between each of the independent variables and quantity sold are :
<u>Average price of deep - dish and Quantity sold :</u>
- Average price of deep - dish pizza(X)
- Quantity sold (Y)
y = - 4713.46x + 117763
<u>Disposable income and Quantity sold</u> :
- Disposable income (X)
- Quantity sold (Y)
y = 2.94x - 58384
<u>Monthly advertising expenditure and Quantity sold</u> :
- Monthly advertising cost (X)
- Quantity sold (Y)
y = - 1.75x - 32655
Learn more :brainly.com/question/18405415
<h2>Answer</h2>
The slope of the line is -8
<h2>Explanation </h2>
To find the slope of our line we are going to use the slope formula:
where
is the slope of the line
are coordinates of the first point
are the coordinates of the second point
We know that the first point on our graph is (0, 6), so 
and 
. We also know that the second point is (1, -2), so 
and 
. Let's replace those values in our formula:
We can conclude that the slope of the line passing through the points (0, 6) and (1, -2) is -8.
