What is the image of (-2, 3) after a rotation of 90 degrees counterclockwise?

Easy points boii. read it. ya. fresh

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

What are the excluded values? m+5/mn+3m