Finding the true equation on the basis of index number


Questions:

System of Equations

1. Solve the system of equations:

3x + y = -7
x - y = -5

2. Solve the system of equations:

3x + 2y = 18
y = 3x

3. Which of the following is true of a base period for an index number?

The numerator spears
It appears in the denominator
It must have occurred after the year 1980
It cannot be less than 100

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Algebra: Finding the true equation on the basis of index number
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