12.Practice.Tests.for.the.SAT_2015-2016_1128p

12 Practice Tests for t h e SAT
468
Practice Test Five Answers and Explanations
Getting to the Answer:
T h e point on t h e l ine is (2, 6), and t h e s l ope is -3.
y=mx+b
12=b
19. E
6 = (-3)(2) + b
6=-6 + b
Difficulty: Hig
Strategic Advice: h
Picking Num b ers may not b e t h e b est
strategy h ere, since you may h ave to pick up to five
num b ers to answer t h is question correct l y. Remem b er t h at
wb h en dea l ing wit h d ivision of exponents wit h t h e same
ase, you can su b tract t h e exponent in t h e denominator
from t h e exponent in t h e numerator to find t h e exponent
t h e b ase is raised to.
Getting to the Answer:
3' + l
r& l = Y=-1 =3(r+l) - (r - l ) =3' + 1 - r+l =32 =9
No matter w h at t h e va l ue of r is, r & l wi ll a l ways equa l 9.
20. c
Difficulty: Medium
Strategic Advice: Once Mary is assigned an office, t h ere are
fewer offices for Anne to b e assigned to.
Getting to the Answer:
Pro ity Mary is assigned an office wit h an X:
Pro b a b i l ity Anne wi ll b e assigne d an office wit h an i = f
X
h if Mary
as b een assigne d an office wit h an X: t
T
b h e product of t h e two pro b a b i l ities is t h e pro b a b i l ity t h at
ot h wi ll b e assigne d an office wit h an X: .l x .l = l
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3 5
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15
SECTION 3
1. A
Difficulty: Low
W h at mig h t you ca ll somet h ing intended merely to gain
more information? If a ll you rea ll y know is at Professor
C h ang wanted more information and t h at t h is intention
contrasts wit h t h e student fee l s l ig h ted, t h en t h e
professor was pro a b l y just as king a question, a good
prediction for t h e b l an k.
C h oice (A) is great matc h for your prediction. In (B), a
confession, or admission of gui l t, wou ld not necessari l y b e
used to gain more information. In (C), simi l ar l y, a dismissal
wou ld pro b a b l y not b e use d to gain more information. In
(0), a condemnation cou ld quite easi l y l ead to someone
fee l ing s l ig h ted: b ut wou ld not gain more information. In (E),
a credo, or statement of b e l iefs, wou ld not necessari l y b e
used to gain more information.
2. B
Difficulty: Medium
Despite signa l s t h at t h e dog's appearance must contrast
wit h ow Step h anie spent h er money. If a ll you know is
t h at t h e appearance of Step h anie's dog contrasts wit t h e
amount of money s h e spent on h is grooming, t h en h er
dog must appear neater t h an one wou ld expect if very l itt l e
money was spent on grooming. It may a l so b e messier
t h an wou ld b e expecte d if l ots of money were spent on
grooming, so l ook for a c h oice t h at matc h es one of t h ese
sets of criteria.
In (A), if an enormous amount of money h ad b een spent
on grooming, one wou ld expect t h e dog to l ook orderly.
C h oice (B) is a good fit for your prediction. In (C), t h e
amount of money spent on grooming wou ld not necessari l y
make a dog l ook more or l ess annoyed. In (0), simi l ar l y,
t h e amount of money spent on grooming, unrealistic or
ot h erwise, wou ld not make a dog appear more or l ess
distracted. In (E), once again, a we ll -groomed dog wou
not necessari l y appear more or l ess ld
agitated.
3. A
Difficulty: Medium
W h at wou ld l an even more sophisticated machine ike l y do
to an invention t h at was once e most advanced on t h e
market? If a ll you know is t h at t h ere was a mac h ine t h at had
been the most technologically advanced of its time, and
t h at l ater an even more sophisticated machine came a l ong,
it is l ike l y t h e newer mac h ine rep l aced or succeeded t h e
o ld er one, b ot h great predictions for t h e b l an k.
C h oice (A) matc h es your prediction nice l y. In (B), a
more sophisticated machine wou ld pro b a b l y not
increase or dou b l e an o lder one. In (C), w h i l e t h e more