SAT Mc Graw Hill 2011

712 MCGRAW-HILL’S SAT

2 2 222 2

16. In the figure above, ∆ACFis equilateral, with
    sides of length 4. If B, D,and Eare the mid-
    points of their respective sides, what is the
    sum of the areas of the shaded regions?
    (A) (B) (C)
    (D) (E)


17. Given the graph of y=f(x) above, which of the
    following sets represents all values of xfor
    which f(x) ≥1?
    (A) all real numbers
    (B) x≥ 1
    (C) − 5 ≤x≤−1; 1 ≤x≤ 5
    (D) − 4 ≤x≤−2; 2 ≤x≤ 4
    (E) x≤−4; x≥ 4

43 63

32 33 42

X: {2, 4, 6, 8, 10}

Y: {1, 3, 5, 7, 9}

18. If ais a number chosen randomly from set
    X and bis a number chosen randomly from set
    Y, what is the probability that abis greater
    than 20 but less than 50?

(A) (B) (C)

(D) (E)

19. If wa×w^5 =w^15 and (w^4 )b=w^12 , what is the
    value of a+b?
    (A) 6
    (B) 7
    (C) 11
    (D) 12
    (E) 13

18

25

3

5

7

25

6

5

1

5

A B C

D

F

E

x

y

246

2

4

6

-2

-2

-4

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