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

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Practice Test Five Answers and Explanations<br />

475<br />

I<br />

12 Practice <strong>Tests</strong> <strong>for</strong> <strong>the</strong> <strong>SAT</strong><br />

Getting to <strong>the</strong> Answer:<br />

12. 4, 8, 1 2, or 16<br />

x2 =8l<br />

Difficulty: Low<br />

x= 9 or x=-9<br />

Strategic Advice: The sum of <strong>the</strong> measures of <strong>the</strong> interior<br />

angles in a triangle equals 1 80°. Pick Numbers <strong>for</strong> g that<br />

Roman numeral I is true. Eliminate (B).<br />

follow <strong>the</strong> rules of <strong>the</strong> question.<br />

2y3 = 54<br />

Getting to <strong>the</strong> Answer:<br />

y =3<br />

g+ 3g + h = 180<br />

II is false. Eliminate (D) and (E).<br />

4g + h = 180<br />

x+ y =-6<br />

Pickg = 41<br />

-9 + 3 =-6<br />

Ill is true. Eliminate (A).<br />

4( 4 l) + h = 180<br />

164 + h = 180<br />

9. 8.5<br />

h = 16<br />

Difficulty: Low<br />

Strategic Advice: Write an equation that represents what is 13. 100<br />

being described in <strong>the</strong> problem.<br />

Difficulty: Low<br />

Getting to <strong>the</strong> Answer:<br />

Strategic Advice: Find <strong>the</strong> total transportation expenses,<br />

<strong>the</strong>n divide that number by <strong>the</strong> total number of days.<br />

( tn )c24) = l 02<br />

Getting to <strong>the</strong> Answer:<br />

tn = 4.25<br />

80 + 70 + l 05 = 255<br />

n = 8.5<br />

345 - 255 = 90 total <strong>for</strong> transportation expenses<br />

9° = 30 per day <strong>for</strong> transportation<br />

10. 5<br />

3<br />

Difficulty: Low<br />

Expenses on Tuesday:<br />

Strategic Advice: When dealing with inequalities, use <strong>the</strong> 30 + 70 = l 00 total expenses<br />

same rules of algebra as you would with equations. Be sure<br />

to reverse <strong>the</strong> inequality sign if you multiply or divide by a 14. 16<br />

negative number.<br />

Getting to <strong>the</strong> Answer:<br />

Difficulty: Medium<br />

Strategic Advice: Notice that MFG is a 3-4-5 triangle. Use<br />

5x -30

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