The total cost, including the deposit, would be $2,750. $500*5=$2,500 $2,500+$250=$2,750
ABD = ABC + CBD
So 6x + 27 + 7x - 9 = 96
Now we need to isolate x
13x + 18 = 96
13x = 88
x = 6
And then apply x to the angle we need to find ( CBD )
CBD = 6x + 27
CBD = 6(6) + 27
CBD = 36 + 27 = 63
Angle CBD = 63°
We have been given that the surface area of the earth is approximately 197000000 square miles.
Also the land area of the earth is given by 58000000 square miles.
Therefore, the fraction of the earth surface is land is given by

On simplifying it, we get

I am assuming you are multiplying the y as well. if so, it is -3*2*3 and that would be -18 so it would be true.