25 x .15 = 3.75
25 - 3.75 = 21.25
21.25 x .20 = 4.25
21.25 - 4.25 = $17 total
X = 75 is the answer is x+25=100
The frequency is how often something occurs. Here 15. It occurred 15 times that the participants scored in the interval given.
The relative frequency (expressed as a percent) looks at how often something occurred relative to the overall occurrences. Here 15/60 = 1/4 = 25%
The relative frequency is 25%
167, 15, -65, -110, -197, -200
180 degree rotation negates both coordinates, and takes a point from quadrant 2 to quadrant 4.
Answer: 4
We can also rotate 180 degrees clockwise, or 540 degrees counterclockwise and end up in the same place.
Combining transformations, we can reflect in the x axis and then in the y axis, also negating both coordinates so equivalent to 180 degree rotation.
