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Algebra I MSW 12 NAME: _______________________________ NO LATE PAPERS ACCEPTED! COMPLETE BOTH SIDES Evaluate the expression when x = -2, 0, and 3 1. x – 2 2. 3. -3x + 2 .5x – .25 Evaluate: 4. 1 5- 2 5. 5 -2 6. 5 2 7. 5 0 Write the equation in standard form: 8. 3x – 9 = 7y Graph the system: 11. y < 3 y>x+2 9. 8 – 5y = -2x 10. 12. 2x + y < -1 2x + y > 3 13. Describe the intersection of the half-planes of the systems shown below: x - y<4 x–y >4 6x = y + 3 Write a system of linear equations to solve the following. Show all work. Answer in a sentence. 14. The sum of two numbers is 38. The greater number is 8 more than the other number. Find each number. 15. A hospital employs a total of 77 nurses and doctors. The ratio of nurses to doctors is 9:2. How many nurses and doctors are employed at the hospital? 16. A metal alloy is a mixture of two or more metals. A jewler wants to make 8 grams of 18-carat gold, which is 75% gold. The jeweler has an alloy that is 90% gold and an alloy that is 50% gold. How much of each alloy should the jeweler use? 17. The length of a sand volleyball court is twice its width. The perimeter is 180 feet. Find the length and width of the sand volleyball court. 18. You have a total of 5 coins in your pocket. They are all dimes or quarters and the total value is $.80. How many of each coin do you have?