Answer:
The price after the discount would be $315.
To find slope subtract the two points in the coordinate (y). We have 8 and 4 so subtract those two. You get 8-4=4. Now start from the same coordinate expect this time subtract (x). Which is 9-3=6. You have 4/6 simplify and you get 2/3. Your slope is 2/3. Hope this helps
60 mm converts to 6 centimeters.
the ratio of 6 to 45 can be simplified to
2 : 15

By the quadratic formula,

Then


Multiply numerator and denominator by the denominator's conjugate:

To solve for x
x+7y=-4
x=-4-7y