Step-by-step explanation:
20 mails in 1/4 day (0.25 day)
-> 1 day = 20/0.25 = 80 emails
To find the point of intersection, you have to set them equal to each other.

To find the y-value, plug in 2 into one of the equations:
y = 2 - 5
y = -3
Point of intersection: (2, -3)
Answer:
Selling Price = $147
Mark Up = 75%
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The selling price of the skateboard is $84.
zoo is the answer....................................................................
The magnitude of this number is far from 1, so it's low correlation
Since it's negative, so it's low negative correlation