SAT Mc Graw Hill 2011

40 McGRAW-HILL’S SAT

5 5 555 5

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3. If (2x)(3x) = , and x>0, what is the

value of x?

(A)

(B)

(C)

(D)

(E)

4. Two positive integers are “compatible” if their
   greatest common factor is a prime number. For
   instance, 15 and 25 are compatible because their
   greatest common factor is 5, which is prime. If m
   and 98 are compatible, and mis an odd number,
   then what is the greatest common factor of m
   and 98?
   (A) 2
   (B) 5
   (C) 7
   (D) 14
   (E) 49


5. For how many integer values of k is
   ⎟k−0.5⎟< 10?
   (A) 17
   (B) 18
   (C) 19
   (D) 20
   (E) 21

1

2

1

3

1

4

1

8

1

16

2

8

3

2

⎛

⎝⎜

⎞

⎠⎟

⎛

⎝⎜

⎞

⎠⎟

6. The figure above shows the graph of a quadratic
   function fthat has a minimum value when x= 2.
   If f(5) = f(k), then which of the following could
   be the value of k?
   (A) –1
   (B) 1
   (C) 2
   (D) 3
   (E) 4


7. If mand nare integers and 1 < m^3 =n^2 < 100,
   what is the value of m+n?
   (A) 4
   (B) 8
   (C) 12
   (D) 16
   (E) 32


8. Amanda travels to work from home in 60 min-
   utes.If, on her way home, she increases her
   average speed by 20% and she travels by the
   exact same route, how many minutes will it
   take her to get home?
   (A) 48
   (B) 50
   (C) 54
   (D) 60
   (E) 64

y

x

1

y=f(x)

1