Find the exact value of each trigonometric function:
1) cot 135 degrees
2) tan -30 degrees
3) cot (-pi)
show your work.
this is from trigonometry or algebra 2.
don't answer if you don't know it.

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.