It looks like you got it right, the point (8, 8200) is that of a collectors item car, that has not changed much its original price of about £10,000 (at year zero), having a value of £8,200 8 years later.

8 0

3 years ago

- 6x - Зу<br> What is the answer

Burka [1]

-3(2x+y) im not great at this but you can checm if its right or not

6 0

4 years ago

A rectangle is 12 cm longer than it is wide. If its length and width are both decreased by 2 cm, its area is decreased by 108 cm

mario62 [17]

Let the width be "x" cm.

Then the length is "x+12" cm

And the area = x(x+12) = x^2+12x cm^2

----------------------------

Change the dimensions:

width = "x-2" cm

length = "x+10" cm

New area = (x-2)(x+10) = x^2 + 8x - 20 cm^2

------------------

Equations :

Old area - New area = 108 cm^2

x^2+12x -(x^2 + 8x - 20) = 108

4x + 20 = 108

4x = 88

x = 22 cm (original width)

x+12 = 24 cm (original length)

5 0

3 years ago