Step-by-step explanation:
The coefficent of the x variable is b.
The formula for the period is

Here, b is 6 so we have

So the period is pi/3, or 60 degrees
False, It was till Pack 5 it was going up 3 every pack but at 5 it went up 13 cookies.
Answer: 0.70
Step-by-step explanation the same as decreased by 30%" would be (1.00 - 0.30)(original cost), or 0.70(original cost)
Im not sure, but i think it should be
( -3, 1 )
( -3, -2 )
( -6, -3 )