Answer:
4k=-2k+6-18
6k= -12
Step-by-step explanation:
- 12
6 12
-2
They add 6 to both sides so 4k=2-12
then add 2k to both side and get 6k=-12
divide by 6 and get k=-2
slope : 1/15
slope = change in y / change in x
change in y = 1 / change in x = 15
therefore, 1/15 = slope
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final price:56.56
tax amount: 3.39
