burningpony/phd_checker

<h2>Math Quiz  3: Contains X Errors</h2>

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1. If the function f is defined by f(x)=3x+ 4, then 2(f(x)+4)=? <b> E </b> </p>
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A. 5x+4
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B. 5x+8
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C. 6x+4
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D. 6x+8
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E. 6x+12
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2. If 2x−1=6, what is the value of 2x+1? <b> B </b> </p>
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A. 7
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B. 8
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C. 9
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D. 10
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E. 12
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3. If 7<sup>n</sup> x 7<sup>3</sup>=7<sup>12</sup>, what is the value of n? <b> C </b> </p>
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A. 2
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B. 4
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C. 9
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D. 15
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E. 36
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4. If the statement "All of Kay’s brothers can swim" is true, which of the following must also be true? <span id="3_4" class="correctme"rel="A">C</span> </p>
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A. If Fred cannot swim, then he is not Kay’s brother.
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B. If Dave can swim, then he is not Kay’s brother.
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C. If Pete is Kay’s brother, then he cannot swim
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D. If Walt can swim then he is Kay's brother.
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E. If Mark is not Kay’s brother, then he cannot swim.
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<p>
5. Sixteen ounces is equal to one pound, and one ton is equal to 2,000 pounds. How many ounces equal two tons? <span id="3_5" class="correctme"rel="E">C</span> </p>
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A. 4,000
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B. 16,000
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C. 32,000
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D. 32,016
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E. 64,000
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<p>
6. If 3 times a number is equal to 3/2, what is the number? <b> B </b> </p>
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A. 1/3
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B. 1/2
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C. 2/3
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D. 2
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E. 3
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7. First, 3 is subtracted from x and the square root of the difference is taken. Then, 5 is added to the result, giving a final result of 9. What is the value of x? <span id="3_7" class="correctme"rel="E">E</span> </p>
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A. 3
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B. 4
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C. 16
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D. 19
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8. If 13 is added to one-half of a certain number, the result is 37. What is the original number? <b> C </b> </p>
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A. 24
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B. 40
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C. 48
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D. 61
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E. 80
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9. If a is an odd integer and b is an even integer, which of the following is an odd integer, 3b, a + 3, 2(a+b), a+ 2b, 2a+b? <b> D </b> </p>
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A. 3b
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B. a+3
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C. 2(a+b)
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D. a+2b
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E. 2a+b
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<p>
10. If x+k=12 and p(x + k)=36, what is the value of p? <span id="3_10" class="correctme"rel="A">A</span> </p>
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A. 3
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B. 4
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C. 6
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D. 9
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E. 12
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11. Each of the following is a factor of 80 EXCEPT? <b> C </b> </p>
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A. 5
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B. 8
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C. 12
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D. 16
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E. 40
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12. If 4(t+u)+3= 19, then t+u=? <b> B </b> </p>
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A. 3
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B. 4
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C. 5
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D. 6
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E. 7
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