HINT: Copy, paste into a word document and print OR copy by hand onto a piece of paper. Then solve.
1. Solve for x, y, and z:
x + y + z = 1
2x – y + z = -5
3x + y + z = 5
2. The Ochlochnee River travels at 3 miles per hour. A fast boat can go 230 miles downstream in twice the time it took to go 85 miles up the river. What is the speed of the boat in still water? What is the time for downstream and upstream?
3. The Bookstore went out of business because the markup they used was only 20% of the selling price of the books. If they sold one shipment for a total price of $1800, what did they pay for the books? [Hint: $1800 includes their purchase price plus the markup.]
4. Solve by Factoring:
a. 3x3 + 5x2 = -2x b. 2 = 2x2 – 3x c. 3x2 + 8x + 4 = 0
5. Multiply: ( x½ + y½ ) (x½ - y -¼ )
6. Graph on a number line: (x+2)(x-3) > 0
7. (Lesson 110#12) Factor: 27x12y9 + p6m15
8. (Lesson 110 #30) Find (h+g)(-2) where h(x) = x, and g(x) = x2
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