Awater cooler fills 150 glasses in 30 min. how many glasses of water can the cooler fill per minute

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

|z| > (1/2) {-1/2, 1/2} {z|(-1/2) < z < (1/2)} {z|z < (-1/2) ∪ z > (1/2)}