Victory for the ACT Student Text 15e

268 • M ATH

TIMED QUIZ (20 items; 20 minutes)

If 2 4 x x 1 = +

, what is the value of x ?

DIRECTIONS: Solve each item and choose the correct answer choice. Calculator use is permitted; however, some items are best solved without the use of a calculator. •™‡”• ƒ”‡ ‘ ’Ǥ ͶͶͲǤ NOTES: ŽŽ ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ •Š‘—Ž† „‡ ƒ••—‡†ǡ unless otherwise stated. ͳǤ ŽŽ—•–”ƒ–‹˜‡ ϐ‹‰—”‡• ƒ”‡ ‡…‡••ƒ”‹Ž› drawn to scale. 2. The word average indicates arithmetic mean. 3. The word line ‹†‹…ƒ–‡• ƒ •–”ƒ‹‰Š– Ž‹‡Ǥ ͶǤ ‡‘‡–”‹…ϐ‹‰—”‡• Ž‹‡ ‹ ƒ ’Žƒ‡Ǥ 1. Š‡ ϐ‹‰—”‡ „‡Ž‘™ ‹• ƒ ’Žƒ –Šƒ– •Š‘™• ƒ solid set of steps to be constructed from …‘…”‡–‡ „Ž‘…• ‘ˆ ‡“—ƒŽ •‹œ‡Ǥ ‘™ ƒ› „Ž‘…• ƒ”‡ ‡‡†‡† –‘…‘•–”—…– –Š‡ •–‡’•ǫ Ǥ ͳʹ B. 15 C. 18 D. 21 E. 24  –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ ™Šƒ– ‹• –Š‡ ˜ƒŽ—‡ ‘ˆ x ? F. 70 G. 60 H. 50 J. 40 K. 30 2.

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3.

1

Ǥ ͳ B. 2 C. 3 D. 4 E. 5

ˆ –Š‡ ƒ…–‘”• ‹ ƒ…‡”–ƒ‹ ’Žƒ›ǡ ϐ‹˜‡ ƒ…–‘”• ƒ”‡ ‹…– ǡ ͳʹ ƒ…–‘”• ƒ”‡ ‹…– ǡ ƒ† ͳ͵ ƒ…–‘”• ƒ”‡ ‹…– Ǥ ˆ ͳͲ ‘ˆ –Š‡ ƒ…–‘”• ƒ”‡ ‹ ‡šƒ…–Ž› –™‘ ‘ˆ –Š‡ –Š”‡‡ ƒ…–• ƒ† ƒŽŽ ‘ˆ –Š‡ ‘–Š‡” ƒ…–‘”• ƒ”‡ ‹ Œ—•– ‘‡ ƒ…–ǡ Š‘™ ƒ› ƒ…–‘”• ƒ”‡ ‹ –Š‡ ’Žƒ›ǫ F. 17 G. 20 H. 24 J. 30 K. 38

4.

 –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ AB BC CA , , is the value of y ?

. What

Throwback to Math Class Š‡ •›„‘Ž , means Dz…‘‰”—‡–Ǥdz ™‘ ‰‡‘‡–”‹…ϐ‹‰—”‡• ƒ”‡…‘‰”—‡– ‹ˆ –Š‡› Šƒ˜‡ –Š‡ same size and –Š‡ •ƒ‡ ƒ‰Ž‡•Ǥ This is not to be confused with similar ‰‡‘‡–”‹… ϐ‹‰—”‡•ǡ ™Š‹…Š means that the ‰‡‘‡–”‹…ϐ‹‰—”‡• are proportional in size.

5.

Ǥ ʹͲ B. 60 C. 80 D. 100 E. 120

†‡”…‡”–ƒ‹…‘†‹–‹‘•ǡ ƒ „‹…›…Ž‡ –”ƒ˜‡Ž‹‰ k k k 2 meters to stop. If k 10 , how ƒ› meters †‘‡• –Š‡ „‹…›…Ž‡ ‡‡† –‘ stop? F. 10 G. 12 H. 15 J. 20 K. 30 meters per second requires 20

6.