Simplify cos(2x)/cos(x)-sin(x). a. 2sin(x)cos(x)/cos(x)-sin(x)
b. 2sin(x)cos(x)/sin(x)-cos(x)
c. cos(x)+sin(x)
d. cos(x)-sin(x)

Graph y = -|x| + 2. click on the graph until the correct one appears.

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.

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?