This preview shows pages 1–6. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Graph the function. 19) Use the graph of f(x) = 3X to pbtain the graph of g(x) = 3X " 1 + 2.
A ’ 2’ Solve the problem. t+ 1 ..
20) The formula S = models the value of a retirement account, where A = the number of dollars added to the retirement account each year, r = the annual interest rate, and S = the value of the retirement account after t years. If the interest rate is 11%, how much will the account be Worth after 15 years if $2200 is
added each year? Round to the nearest Whole number. 0 (mm! 4:29. l l' if ‘56?” 3 9:5 y) l 21) A sample of 700 g of lead210 decays to poloniumu210 according to the function given by A(t) = 700e—0032t,
where t is time in years. What is the amount of the sample after 100 years (to the nearest g)? l __ .. 0%.?(101) /\ :— 77 m: (2 ' A». genes 0 Write the equation in its equivalent logarithmic form.
22) c3 = 1000 Mrs Hestz'yas Graph the function.
24) Use the graph of log 5 x to obtain the graph of f(x) = 2 + log 5 x. Evaluate the expression without using a calculator.
25) log7 718 26) 10%;;
[£93 I} I : Li
27)log28
25 “a? : (:7 Find the domain of the logarithmic function. 28) f(x) = 10g[x + 7] x—8 x+q>o Mrs Hesriyas Evaluate or simplify the expression without using a calculator.
29)3[1010g 5.2] 3 (emf1) Solve the problem. 30) The long jump record, in feet, at a particular school can be modeled by f(x) = 18.1 + 2.2 ln number of years since records began to be kept at the school. What is th
record started being kept? Round your answer to the nearest tenth. (SJH4); 1%.} +333 \LWULHL') (x + 1) where x is the
e record for the long jump 14 years after 1/799 «/ Ito4+ {J Evaluate or simplify the expression without using a calculator.
31ilog0a0s1 . —
1 DC?) 1 0 EU Evaluate the expression without using a calculator.
32) eln 153 ..L_J_._——K Write the equation in its equivalent exponential form.
33) log b 64 = 2 [m Use properties of logarithms to expand the logarithmic ex
logarithmic expressions without using a calculator.
34) log2 (8x) pression as much as possible. Where possible, evaluate Mrs Hestiyns solution.
35)e2x+eX—6=0
[egg4' exﬂé :0
[44 ex: A)? Pr ’é : D
(MBDWZFD
a _ r 2 2 X
A _ 2 H e : r_
ex: "3 ex: U01,” 2. 1’10 SOLulf'Tﬁm €*>@LJ$) X JM 9. :
Solve the logarithmic equation. Be sure to re
expressions. Give the exact answer. 36)1n(x—6)+ln(x+1)=ln(x— 15) c/ j eat any value that is not in the domain of the original logarithmic (luch ‘
VQM UPC“) OH D: Lam (X4?) Tn [3—6)+ MEN): M845)
~ has «Lqu : Jim~23
Ova) hm)  OM'G) / NO SDLMM
X2+x~séx~aé : Kc“?
X2'P?XHG : X 4‘3
XlMGXM : 0
(x95) (X~%)’:O Solve the problem. In 0 S o C m . 37) The formula A = 11841024t models the pop mm city, in thousands, t years after 1998. When
will the population of the city reach 140 thousand? a (52L, E '
J L)r D : H63 9
., 0 :L'Li L’ 
lLE’C‘ '_ Q
‘ n f .
g . o 2 L, t
W13 ), L. m 9
rum 3 in
a  €17 . I:
m 132 I D Z Ll JL V‘ e I
I 1% _e : JC
I l ‘3
WOQL’ 1998*4 ‘1
(f: if} C GUYS Ll ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +‘+++++ Solve the logarithmic equation. Be sure to reject any value that is not in the d
expressions. Give the exact answer. 38)log(x+20)—log2=log(3x+4)
M20 .. lo (axeii)
O a;
*6.) a 3
><+2e 1.: BX'i—‘i
.1
XilﬁzéxX'l'g omain of the original logarithmic IQ: 5X
~L2_.
xi]? .2tz : 3XF3’H~ Solve the logarithmic equation. Be sure to reject any value that is not in the domain
expressions. Give the exact answer. 40)log3(x+6)+log3(x—6)log3x=2 CNch_, 3% we we) : 9‘: 11 a
X.:__% iDjperY/ 9x (03 “2%)+loagbznmJoj312 a 2_
a ‘ 3 ‘ 3 e [X“é')(,x'*62  3'2 loo 1% +l03 (suit)? 12 3 2
—to —%):2 J77” ’ J. 3 3 3 of the original logarithmic VUO giolciim i 1 i {LL :
L X —36 : (j “)3 Mrs Hestiyns Use properties of logarithms to expand the log
logarithmic expressions without using a calculator. arithmic expression as much as possible. Where possible, evaluate 4? 3,— a a,"
41)10ga L “5 [DO Xi} [£30le5 % [039” 2) % L to XL]#loo CoxJr?)
cl {3:} 3‘ A)? l ,
[03 Lxgjm—u [03:1 (x—Hf‘ 00
r? 7 Use common logarithms or natural logarithms and a calculat or to evaluate to four decimal places
43) log0 7 15 (be) Jim “a”
(0304 140W?) ...
View
Full
Document
This note was uploaded on 01/16/2012 for the course MATH 126 taught by Professor Blisinhestiyas during the Fall '11 term at Truckee Meadows Community College.
 Fall '11
 BlisinHestiyas

Click to edit the document details