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Answer:
A y = 2x + 5
Step-by-step explanation:
The cost per dog is the slope of the cost equation, 2. The equation can be written in point-slope form as ...
y -7 = 2(x -1) . . . . using the point (1, 7)
Simplified, this is ...
y = 2x -2 +7
y = 2x +5 . . . . matches choice A