1. A
   -4
2. B
   -3.5
3. C
   -3
4. D
   0

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1. A
   0
2. B
   5
3. C
   2ln5
4. D
   5ln5

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1. A
   1 and 2 only
2. B
   2 and 3 only
3. C
   1 and 3 only
4. D
   1, 2 and 3

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1. A
   0
2. B
   $\frac{1}{2}$
3. C
   1
4. D
   Limit does not exist

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1. A
   0
2. B
   3
3. C
   6
4. D
   Limit does not exist

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1. A
   $(-\infty,1)$ only
2. B
   (1,6)
3. C
   $(6,\infty)$ only
4. D
   $(-\infty,1)\cup(6,\infty)$

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1. A
   -2
2. B
   0
3. C
   2
4. D
   Cannot be determined due to insufficient data

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1. A
   $\frac{1}{8}$ square unit
2. B
   $\frac{1}{4}$ square unit
3. C
   $\frac{1}{2}$ square unit
4. D
   1 square unit

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1. A
   130
2. B
   260
3. C
   2113
4. D
   4226

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1. A
   A family of straight lines
2. B
   A family of circles
3. C
   A family of parabolas
4. D
   A family of ellipses

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1. A
   -2
2. B
   -1
3. C
   1
4. D
   2

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1. A
   $x+y-1=0$
2. B
   $x-y-1=0$
3. C
   $x+y+1=0$
4. D
   $x-y-2=0$

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1. A
   $x^2+y^2-2x-2y-1=0$
2. B
   $x^2+y^2+2x+2y+1=0$
3. C
   $x^2+y^2-2x-2y+1=0$
4. D
   $x^2+y^2-4x-4y+4=0$

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1. A
   $y^2=3x$
2. B
   $x^2=12y$
3. C
   $y^2-12x$
4. D
   REVIEW: option C should be $y^2=-12x$

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1. A
   1
2. B
   $\sqrt{2}$
3. C
   2
4. D
   $2\sqrt{2}$

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1. A
   q
2. B
   2q
3. C
   3q
4. D
   4q

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1. A
   2
2. B
   3
3. C
   4
4. D
   6

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1. A
   $a-b=0$ only
2. B
   $a+b=0$ only
3. C
   $a^2-b^2=0$
4. D
   $ab+1=0$

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1. A
   $x-y=0$
2. B
   $x+y=0$
3. C
   $x-y=p$
4. D
   $x+y=p$

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1. A
   $2x-3y=0$
2. B
   $3x-2y=0$
3. C
   $4x-6y+5a=0$
4. D
   $4x-6y-5a=0$

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