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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?