Describe in your own words how you find the coordinates for any point (x, y) when it is rotated 90 degrees counterclockwise about the origin.
Show a graph and an example of this type of rotation.

Considering the point

If you represent it as a complext number, you get:

- Counterclockwise if multiplying by

- Clockwise if multiplying by

Note, I'm considering

Another approach using trigonometry is considering:

So the rotation will get the coordinates

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.