Answer:
a = -21
Step-by-step explanation:
-3a +2a -8 = 13
- a-8 = 13
-a -8 -13 = 0 ( the sign changes from +13 to -13 )
-8 -13 = a ( the sign of a changes from -a to + a ) -21 = a
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we need to see the whole graph to determine the domain and range please
see attached picture
answer is (x-2)