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Purdue MA 11100 - Exam 1
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1 Review Exercises Used for Fall 2007 Semester with answers. Exam 1 Review: Chapter 1 Review page 71: 2, 5-9, 11, 12, 14, 15, 18-29, 37-41, 44-48, 50, 51, 53-63 Chapter 2 Review page 145: 11-15, 19 Answers to Exam 1 Review Problems: 2) g )315( x−− 5) i )142(+x 6) b )6142(=+x 7) f )536=−x 8) c )36(−x 9) d ))3(2( x+ 11) 5−yx if x and y represent the numbers 12) 22 13) {1, 3, 5, 7, 9} and xx |{ is an odd number between 0 and 10} 14) 1750 sq. cm 15) 9.3 18) 2.10− 19) 3523− 20) 157 21) 5.11− 22) 61− 23) 4.5− 24) 12.6 25) 125− 26) 8.4− 27) 6 28) 1.9− 29) 421− 36) )2(7+nm 37) 56423+−xx 38) 47x – 60 39) x = 11.62 40) a = 227 41) 114−=x 44) 2x + 15 = 21 45) 48 46) 30, 90, and 60 degrees 47) mPS= 48) rmcx−= 50) 8612ba− 51) 64xy 53) 53 or 243 54) 6125a 55) 698ba− 56) 648yxz 57) 201616ab 58) 73 59) 0 60) 71003.1−× 61) 1310086.3 × km 62) 7107.3 × 63) 6100.2−× 11) yes 12) no 13) yes 14) no3 15) points include (0, 2), (1, -1), (-1, 5) and (2, -4) 16) points include (0, 1), (1, 0), (-1, 0), (2, -3), (-2, -3), (3, -8) Review Exam 2: Chapter 2 review: pages 144-146, 2, 3, 6, 12, 13, 15-18 all, 20-24 all, 27-32 all, 34, 36- 45 all, 47-49 all, 51 Chapter 3 review: pages 216-217, 1, 2, 4, 5, 7, 11-16 all, 18, 19, 26, 29, 30456789 Review Exam 3:10 Chapter 4 review: page 274 3, 6, 7, 16, 18, 19, 21, 22, 38, 39, 40, 42, 43, 44 Chapter 5 review: pages 348-349 1, 2, 3,, 10, 11, 12, 14, 17, 19, 23, 24, 26, 27, 28, 29, 32, 34, 35, 36, 37, 38, 39, 40, 43, 47, 50, 51, 54, 56, 57, 58, 59, 62, 63, 64 Chapter 6 review: pages 429-431 2, 7, 10, 11, 12, 13, 14, 15, 19, 20, 21, 22, 30, 32, 33, 35, 36, 37, 38, 48, 49, 50 Chapter 7 *review: page 502 4, 9, 10, 11, 13, 14, 17, 21, 22, 25, 26 *Assume variables in radicals are positive values Answers for Exam 3 Review Practice Problems Chapter 4: 3) true 6) true 7) true 16) }23|{ −>xx ∞− ,23 18) −>23220| yy ∞− ,23220 19) −≤25| xx −∞−25, 21) more than 125 hours 22) at most $3000 38) }10,4{− 39) −27,217 40) ∞∪−∞− ,319311, 42) no solution 43) []8,16− 44) ()()∞∪∞− ,100, Chapter 5: 1) g 14124823++− xxx 2) e 29 t− 3) j 91242+− aa 10) d prime 11) degrees of terms: 7, 11, 3, 0 degree of polynomial: 11 12) 932523+++− xxx ; 5;53−− x 14) 0)0(=P 6)1(−=−P -2 -1 -10 -9 -5/211 17) 222xyyx −− 19) 163334+−+− xxx 23) 22376 yxyx +− 24) 4318 yx− 26) 222328 cabcba −+ 27) 22254 yx − 28) 2216249 yxyx +− 29) 3522−+ xx 32) 181212+− xx 34) )13(322−yy 36) )3)(9(−−aa 37) )4)(23(++mm 38) 2)25( +x 39) )2)(2(4−+yy 40) )2)(7(−+xxx 43) )3)(3)(9(2−++ aaa 47) )1(4+yy 50) 2)53(4 −x 51) )3)(52( ptpt++ 54) {8} 56) 47,0 57) }4,4{− 58) }7,0,3{− 59) }6,1{− 62) side is 5 units 63) 3,5,7−−− or 3,5,7 64) width: 5 in.; length: 8 in. Chapter 6: 2) false 7) true 10) true 11) (a) 92− (b) 43− (c) 0 12) LCD = 348x 13) LCD = )2)(4)(5(−−+xxx 14) 3+x12 15) 5262adcb 19) )1)(3(3++−xxx 20) yxyx+− 21) )(2 yx+ 22) )1)(4( −+−yyy 30) x = 2 32) no solution 33) x = 0 35) 715 hours 36) Celeron: 45 seconds; Pentium: 30 seconds 37) boat: 24 mph 38) car: 70 mph; motorcycle: 62 mph 48) about 21.97 pounds daily 49) 64 L 50 =xy143 or xy43= Chapter 7: 4) true 9) 37 10) 5.0− 11) 5 13) 5t 14) c + 8 17) 2− 21) 34)5(ab or 3434345 ba 22) aa48 25) 521a 26) 61713 Review for Rest of Semester: Chapter 7 review problems, ps. 502-503 19, 20, 28, 29, 30, 32, 33, 34, 35, 37, 38, 44 Chapter 8 review problems, p. 580 11, 13, 15, 16, 18 Answers Chapter 7 Review 19) 23yx 20) 22x 28) xy6 29) 3 223 baa 30) 3 24526 xyx− 32) 25 x 33) 243232caa 34) 37 x 35) 3 37) 215 38) 481066415−−+ 44) 19=y Chapter 8 Review 11) 23,23−==xx 13) 3,9==xx 15) 3,5==xx 16) 2859±−=x 18)


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Purdue MA 11100 - Exam 1

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