Checkpoint Quiz 2

1. Solve 7x + 3 = 15x + 9.
   1. 
   2. –
   3. 
   4. –
2. Solve n + 5 = n.
   1. –14
   2. –
   3. –
   4. 1
3. Solve – x – 8 = 4x + 3.
   1. –2
   2. –1
   3. –2
   4. 
4. Solve 5(2w – 4) = 6w.
   1. 5
   2. 1
   3. –
   4. –
5. 2y – 8 = – (3 – 5y)
   1. –2
   2. 3
   3. –1
   4. –13
6. Solve 0.3a + 0.7 = 0.5a – 0.1.
   1. –3
   2. –4
   3. –0.1
   4. 4
7. Solve for y: 2x + 7y = 35.
   1. y = 35 –
   2. y =
   3. y =
   4. y = 35 + 2
8. Solve for y: 5x – 2y = 15.
   1. y = 2.5x – 15
   2. y =
   3. y = – x – 15
   4. y =
9. Solve for y: 2/3 x + 3/4 y = 9.
   1. y = –1 x + 13
   2. y = 12 – x
   3. y = –8x + 12
   4. y = x + 6
10. Two cars are traveling on the same highway. The first car is traveling at an average rate of 44 mi/h. The second car leaves an hour later traveling at an average rate of 55 mi/h. How long will the cars have traveled when the second car catches up with the first car?
    1. first car: 5 h; second car: 4 h
    2. first car: 4h; second car: 3 h
    3. first car: 5.5 h; second car: 4.5 h
    4. first car: 6 h; second car: 5 h

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