It’s the first one cause C is multiplying by 3 and D is adding by 2
Hi there!
To solve the inequality, the only step is to divide each side by -12 to isolate the x-value.
That would leave you with 12 < x < 2
Hope this helped! :D
Distances in 2- and 3-dimensions (and even higher dimensions) can be found using the Pythagorean theorem. The straight-line distance can be considered to be the hypotenuse of a right triangle whose sides are the horizontal and vertical differences between the coordinates.
Here, you have A = (0, 0) and B = (3, 6). The horizontal distance between the points is ...
... 3 - 0 = 3 . . . . the difference of x-coordinates
The vertical distance between the points is ...
... 6 - 0 = 6 . . . . the difference of y-coordinates
Then the straight-line distance (d) between the points is found from the Pythagorean theorem, which tells you ...
... d² = 3² + 6²
... d = √(9 + 36) = √45 ≈ 6.7 . . . units
15 in 2 hours is 7.5 in an hour (I divided by 2). And she would only get $20 for that.
(Half of what she gets in 2 hours)
So her rate is $20 per 7.5 pages per hour.