Answer:
The coordinates of point B are (3,-2)
Step-by-step explanation:
we know that
The rule of the reflection of a point across the y-axis is given by
(x,y) -----> (-x,y)
so
Applying this rule to the point A(-3,-2)
A(-3,-2) --------> B(3,-2)
therefore
The coordinates of point B are (3,-2)
we need to get y alone so subtract 2x from both sides of the equation
2x+4y=12
-2x -2x
-----------------------
4y=-2x+12 now divide both sides by 4
y = -2x/4 +12/4
y = -1/2 x +3
Take the total: $79.99
Subtract the shipping cost: $4.99 ($75)
Divide that by the number of socks: 75/15
=$5 per sock with the discount
Take the discount of 20% and multiply that by the sock price $5 - 5 x .20 = 1
Add that to the sock price: 1 + 5 = 6
$6 per sock without the discount is your answer
