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