Angle a ABC in the coordinate plane below will be rotated 90° counterclockwise about the origin. What are the coordinates of the image of point A?

This is so hard and it’s for a test

Solve the equation by completing the square. x^2+2x=17

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)