Step-by-step explanation:
<u>Remember:</u>
X = 2.5
Y = 1.5
Z = 1
The chart:
X Y Z
I 10000 7000 8000
II 6000 10000 5000
X
The first column represents X. Since X's value is 2.5, we multiply both those numbers by 2.5.


These are the values of X.
Y
The second column represents Y. Since Y's value is 1.5, we multiply both of the values by 1.5.

These are the values of Y.
Z
The last column represents Z. Since Z's value is 1, we do not need to multiply the numbers, since they are already multiplied by 1.


These are the values of Z.
ADDING
Now that we have are 6 numbers solved, all we have to do is add them all together.

Our final answer: $78,500 is the total. (first option)