Key%20for%20Rational%20Equations%20&%20Word%20Problems

Key%20for%20Rational%20Equations%20&%20Word%20Problems...

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Unformatted text preview: MATH 100 Review on Rational Equations and Word Problems Solve the following equations. List any restrictions and check for extraneous solutions. (1) flx—ffg—z (2) 36:22; X7511. ax: -¢~Q(x+3) awn: 21x :11 c 141%» 3Xté=6l>< 41:41 =:> Ki” "4’ x a~3 (3) x +3=—2— (4) i=_r_l____3_ at I . @333, 4ri+§:%:§’(£:3; We x+ 3x54, 2 a, N0 . W40 :. “213x46 ’fx : 8 © x4 “90’wa 72c =' => xs’l (s) 5 =—3— (6) _3_=;+ 7 I 2x——3 x+5( x—2 x4 x2w3x+2 X=f [1‘1 -—' 2 + “l 1 “ , as. .1;ng an, 2 3 2x 35’ : : Solve for tlfgindicald variable. > X {i 1 (7) Cz-g-(F—ISZ’)“ forF (8) Suicé fora LCD, 3% qL:b(F-¢Jli\l 5:5»353-534‘ ’35 ,6. .935, a... ’35::- 4m . a: ’1“ ._ ‘5 F: 1c... 61 l @5160 ’36s; 3-51 3 b 1’ 3 (9) xy2+ngl=xw%—6 forx (10) %+-Jl—C-=—1- fory LCbl, LOX“ x31”? mil: “é N3 +1 1.5%); UK V XQjMe ewa‘li'é ijXfDJJ‘ 5M X": %€E—w& , “X Solve the followinaword problems. 4" (11) (12) (13) (14) It takes a person the same time to drive 150 miles as it takes a Wane to fly 1350 miles. If the plane is flying 400 mi/h faster than the ear, how fast is each traveling? It took a woman the same time to drive 150 miles as it takes a train to travel 250 miles. If the train is traveling 20 mi/h faster than the woman is driving, find the rate at which each is traveling. Wilma can mow the lawn in 3 hours. If Kyle helps her with another mower, the lawn can be mowed in 2 hours. How long would it take Kyle if he worked alone? Ralph can paint a room in 2 hours, and Joy can paint the same room in 3 hours. If they work together, how long would it take them to paint the room? i513 , I350 W993 n 359:“ 3 (55;) (H?de ’330r 5 /50r + (4 abs )01001'1éUJUUCJ 9": 5'0 ...
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This note was uploaded on 04/24/2008 for the course MATH 100 taught by Professor Paterson during the Spring '08 term at LA Tech.

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Key%20for%20Rational%20Equations%20&%20Word%20Problems...

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