WS 3-one - Precalculus 1 : Handwritten Homework Worksheet :...

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Unformatted text preview: Precalculus 1 : Handwritten Homework Worksheet : 3 Chapter 3,7,8 Name Math —126 Date: Section: Your work must be in a readble format and be in logical order. You may recieve no credit, if your handwriting is not clear to understand. Homework with answers only will not receive any credit. To receive full credit, you must Show your work and arrive at the correct answer. Total : 15 Points Solve. 1) The half—life of silicon—32 is 710 years. If 50 grams is present now, how much will be present in 200 years? (Round your answer to three decimal places. Pf?— ng Sick)- A: RD 6. :Ho it. her, , 443m) fl 1:50 L2:on hat—filo) Ar’bo 4m) e __.L Domiiqm aids”) A i .50 [—r . saaéae a) wag/2);: KEZIODVQAAQ Z LHl-LB' .TWS, .————--"': fir-,4 O :lii The value of a particular investment foiIOWS a pattern of exponential growth. In the year 2000, you invested money in a money market account. The value of your investment t years after 2000 is given by the exponential growth model A = 3100e0-046t. When will the account be worth $3902? ‘ O 4 6 E ‘ - J3me * D l 301031;?510'062. tflmldwgl _ .onek * 3%; “ antréb- Ib‘nao’ Bio-o ’ :0“, t . a i560 lle , Q 1650 " _ 10.91 ' _ .ouélr .a—r real _ ppm a l 1657) ’ ° “*5 Solve the problem. ‘6 - B'Ul : 23,000 1 + 1149.0e-1-8t particular infection t weeks after its initial outbreak in a particular community. How many people became ill with this infection when the epidemic began? tier mm I+Hwooe ._ 33,000 1+ HM? :. a0 Paopia. 3) The logistic growth function f(t) = models the number of people who have become ill with a le) Mrs Hestiyns Use Newton's Law of Cooling, T = C + (T0 — Gel“, to solve the problem 4) A cup of coffee with temperature 102°F is placed in a freezer with temperature 0°F. After 8 minutes, the temperature of the coffee is 52.5°F. What will its temperature be 13 minutes after it is placed in the freezer? Round your answer to the nearest degree. lg [13) Q, 5‘2 a / 3 o 2 > , : h: __.— 551,5: 0+ (102-0) 3 ' l o 2_ I 3 ‘ ° (5 6 Present data in the form of tables. For the data set shown by the table, L} o _ 21. Create a scatter plot for the data. I * B 6 1- b. Use the scatter plot to determine whether an exponential function or choice for modeling the data. 5) Number of Homes Built in a Town by Year Year Number of Homes 1985 12 1991 91 1994 145 1997 192 2002 224 11" I IN ‘- 12$ 21% ‘ g I530 " “:0 9 M0 122' In . $6 1%”? “Ho 19%" 2:700 2009' Solve the system by the addition method. \ \ sis/=3? 74-y+33:2fl —® may“ x :— m ewé) X: ' Y ax~+33 *— Lm ~03 _. : X‘H%@WP‘ thwag m Mrs Hestiyas Solve the system by the method of your choice. 7) y = 2x + 1 6x-3y2-3—-@) e: + 21"?” gm O:—-€> 730130. N0 Sohlc‘m Solve the problem. 9) A vendor sells hot dogs and bags of potato chips. A customer buys 2 hot dogs and 3 bags of potato chips for $6.50. Another customer buys 5 hot dogs and 4 bags of potato chips for $12.75. Find the cost of each item. X :3 d9 Sprig; ZFX 36.6.0 0: t — ‘l a 3:) P0 lean‘u :12346—e—@ —)‘~i’l @X ‘6}; *lo ?__\btd ‘r—v—Ba'b— P g“ .-=)Ei>l'0_'0 x - I>(+<& -95«6‘ L‘l _ P @9 2» ’ \__j_:——’———Z_X-+3U)SE_>:50 . E1 _ . Find the width. . _ - _ . X 1x + 10H“) ——:l'0 21+QJH¥2111p X+H msz :‘10 Mrs Hestz'yas [LIL 23194—63 —&E —® S Iv th tm f uti . 0 ellisiyzis+e22:ZE(E—a3y(;m LPX fig—t-LL: ——@ X— -Z= _ .—~2.2 3 :EZx-fi)+élz:?22 a —e -—a H+ ngzl: I —3 -—r 4 A; «la “Lt a8 4 -r2 ‘L: 2% G 3 it “013 g 3 q —22 i "3 ——l j -3 _, N0 SULLcli'U‘n. e 3 (4 P22 Solve the problem. 12) The following is known about three numbers: If the second number is subtracted from the sum of the first M DU M number and 4 times the third number, the result is —19. The third number plus 2 times the first number is —5. __g_ The first number plus 2 times the second number plus the third number is ~7. Find the three numbers. [0) l i [Hint let x represent the first number, y the second number, and z the third number. Use the given conditions to write and solveasystem of equations] _ _,_| ._ — R: -_ 1 1 it Hi 12 -+._ A .. ax +%:“’5_‘@ will '\ .. ‘Fl Lt 461 a ——"‘9 l h '— - - “I tr ""1 o I "‘ 'i -—l tr ’4‘? RfTRfl-RL RB—PR'HZS E I“’r~53/z (a , I “Tb—x ’l Ll a“; l ‘l If "big 01-: €295 33 '2’ O a} o a «7+ 33 o 2-1; 33 9/ 2 "'3+=FL5):_.§: ‘ a ' I a I 5+ o 3 —3 la ;—-; 13) Find the values of a, b, and ch that the graph of e quadratic equation y : ax2 + bx + c passes roug th- points (—3, —14), (—1,—6), and (3, —38). a: QXDZFEX +C {~3,—M) .44: 63[—3)1—t bt~3)+C h-iLf : cm _3b—+c —@ (are) -—c : aL‘:)1-+sc—i)-+C\ we, : cow—23H? 3' 3‘. - +C (Synge) ___3<8_: 61(3) + blBD ' «39:Qa+ab+c—“@J 6? -—31-ILI ++++++++++ +++++++++++ Mrs Hestz'yas ...
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WS 3-one - Precalculus 1 : Handwritten Homework Worksheet :...

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