Victory for the ACT Student Text 15e

M ATH T EST M ECHANICS • 195

TIME TRIAL ȍͻ items; ͻ minutesȎ

If s

, t , and u are different positive integers and t s and u t are positive integers, which ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ „‡ ƒ ’‘•‹–‹˜‡ integer? A. u s B. s t ] g C. s u D. ( ) s t u E. ( ) s u t  –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ AD DC . What is the value of AD DC ?

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. NOTE: All of the following should be assumed, unless otherwise stated. ͳǤ ŽŽ—•–”ƒ–‹˜‡ ϐ‹‰—”‡• ƒ”‡ ‡…‡••ƒ”‹Ž› drawn to scale. 2. The word average indicates arithmetic mean. 3. The word line indicates a straight line. ͶǤ ‡‘‡–”‹…ϐ‹‰—”‡• Ž‹‡ ‹ ƒ ’Žƒ‡Ǥ 1. 10 1 10 1 25 26 − = ? A. 10 9 25 B. 10 1 25 C. 10 9 26 D. 10 9 25 E. 10 1 2. The table below shows readings of water levels for the Red River at various times. If readings of the rise of the water level followed a geometric progression, how many inches above normal was the water level at 3:00 p.m.? RED RIVER WATER LEVEL READINGS Time (p.m.) 1:00 2:00 3:00 4:00 Inches above ‘”ƒŽ 0.5 1.5 ? 13.5 F. 4 G. 4.5 H. 4.75 J. 5 K. 5.25

3.

4.

F. 18 2 G. 18 H. 10 2 J. 10 K. 6 2

 –Š‡ ϐ‹‰—”‡ „‡Ž‘™ǡ –Š‡ Ž‡‰–Š ‘ˆ AC is 5 units. Which of the following is the best approximation for the number of units in the length of BC ? (tan . ) 22 0 4 c . A. 2.0 B. 3.0 C. 7.5 D. 12.5 E. 16

5.