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Help ASSAP WITH THIS QUESTION

Help ASSAP WITH THIS QUESTION-example-1

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slope: (3240-3555)/(8-1)=-45
y=-45x+b
use (1,3555) to find out b
3555=-45*1+b
b=3600
so y=-45x+3600
Next, find out y when x is 20
y=-45*20+3600=2700
User Stanga Bogdan
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