A store purchased a DVD for $15.00 and sold it to a customer for 50% more than the purchase price. The customer was then charged
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
You can get the gradient of the line perpendicular to this as you know the products of their gradients will be -1.
We have a gradient, and a point (6, 1), so we can now substitute our known values into the line equation.
Rearrange for y and collect terms.
Our polynomial is 
We can tell from -28 that the binomials are one positive and one negative.
We can use a factoring chart. What adds to make +3x and multiplies to make -28.
To get a negative 28, we can multiply -4 and positive seven, which add together after being multiplied by x to get +3x. Therefore, you are left with (x+7) and (x-4).
We can tell from -28 that the binomials are one positive and one negative.
We can use a factoring chart. What adds to make +3x and multiplies to make -28.
To get a negative 28, we can multiply -4 and positive seven, which add together after being multiplied by x to get +3x. Therefore, you are left with (x+7) and (x-4).