the answer is -8, the 9 is negative and -9+1= -8
Answer:
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Step-by-step explanation:

Answer:
When the lines are parallel, there are no solutions, and sometimes the two equations will graph as the same line, in which case we have an infinite number of solutions.
Step-by-step explanation:
The answer is a decreasing exponential function because the percentage of change is constant. You can obtain this answer by looking at the amount of decrease each time and dividing it by the higher value. If you do this for each step, you'll see that there is a 12% decrease for each year.