Answer:
6 parts yellow
Step-by-step explanation:
The regression equation of Y on X is given by the following formula:

Where byx is given by the formula:

Where N is the number of values (N=8). We need to find the sum of X values, the sum of Y values, the average of X, the average of Y, the sum of X*Y and the sum of X^2.
The table of values is:
The values we need to know are on the following table:
By replacing the known values in the formula we obtain:

Now, the average of X and Y is the sum divided by N, then:

Replace these values in the formula and find the regression equation as follows:

The answer is a) y=4.6x+28.26
Answer:

Step-by-step explanation:
Let
x = cost for one adult
y = cost for one child
z = cost for one senior.
<u>The Reid family:</u>
take 2 adults and 2 children and paid
that is
, so

<u>The Mghee family:</u>
take 1 senior, 2 adults and 1 child and paid
that is
, so

<u>The Griffiths family:</u>
take 1 senior and 3 adults and paid
that is
, so

You get the system of three equations:

From the first equation:

From the third equation:

Substitute them into the second equation:

Then

Hence,
the cost for one adult is 
the cost for one child is 
the cost for one senior is 
<u>The Linton family</u> takes 1 senior, 2 adults and 3 children and paid

Answer: f(-3) = 2 x -3 = -6
15x - 10 where x is equal to the number of weeks would respresent the situation above. This is because he gains 15 cards every week and gave ten cards to James once.
If it has only been one week, the expression will be 15 - 10 because 15 × 1 = 15.
I hope this helps!