Help pls 6th grade math i will give brainliest

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Hi if you want to play a sports related kahoot go to kahoot.it and type in this code: 659344

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next