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3. x = –4y + 4

2x + 8y = 8
A. one
B. two
C. infinite
D. none

4. y = 6x + 2

3y – 18x = 12
A. one
B. two
C. infinite
D. none

5. x – 2y = 6

3x – 6y = 18
A. one
B. two
C. infinite
D. none

6. y – 5x = –6

3y – 15x = –12
A. one
B. two
C. infinite
D. none

10. Tom has a collection of 30 CDs and Nita has a collection of 18 CDs. Tom is adding 1 CD a month to his collection while Nita is adding 5 CDs a month to her collection. After how many months will Tom and Nita have the same number of CDs?
A. 1 month
B. 3 months
C. 2 months
D. 33 months

11. Kendra owns a restaurant. She charges $3.00 for two eggs and one piece of toast and $1.80 for one egg and one piece of toast. How much does Kendra charge for one egg and one piece of toast?
A. $1.20 per egg; $0.60 for toast
B. $0.60 per egg; $1.20 for toast
C. $0.60 per egg; $0.60 for toast
D. $1.20 per egg; $1.20 for toast

14. Which is the solution of the system? Use Substitution
2x - y = -7
4x - y = -4

A. (–1.5, 4)
B. (1.5, 10)
C. (4, –1.5)
D. (–1.5, –2)

15. What is the solution of the system? Use Elimination
5x + 7y = 32
8x + 6y = 46

A. (8, 5)
B. (1, 5)
C. (7, 0)
D. (5, 1)


16. Mike and Kim invest $12,000 in equipment to print yearbooks for schools. Each yearbook costs $5.00 to print and sells for $15.00. How many yearbooks must they sell before their business breaks even?
A. 800 yearbooks
B. 1,200 yearbooks
C. 2,400 yearbooks
D. 1,800 yearbooks

17. At the local ballpark, the team charges $5.00 for each ticket and expects to make $1,300 in concessions. The team must pay its players $1,800 and pay all other workers $1,500. Each fan gets a free bat that costs the team $3.00 per bat. How many tickets must be sold to break even?
A. 2,300 tickets
B. 400 tickets
C. 250 tickets
D. 1,000 tickets