My teacher salary in 1996 was $21,129 and in 2019 it was $58,429. What was my percent of change? Round to the nearest tenth.

9514 1404 393

  176.5%

Step-by-step explanation:

The percentage change can be computed from ...

  percent change = ((new value)/(old value) -1) × 100%

  = (58429/21129 -1) × 100%

  = (2.7653 -1) × 100%

  percent change ≈ 176.5%

Additional comment

The average annual increase can be found by taking the root of the ratio, where the root index is the number of years. The percentage increase each year is that root less 1.

  (2.7653^(1/(2019 -1996)) -1 ≈ 4.5% . . . per year for 23 years

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: