Questions on Algebra: Exponent and logarithm as functions of power answered by real tutors!

Algebra ->  Exponential-and-logarithmic-functions -> Questions on Algebra: Exponent and logarithm as functions of power answered by real tutors!      Log On


   



Tutors Answer Your Questions about Exponential-and-logarithmic-functions (FREE)


Question 105572: what is arithmetwists?
Click here to see answer by MathLover1(20850) About Me 

Question 105966: +7=5%5Ex+.
Click here to see answer by HyperBrain(694) About Me 

Question 106033: How long does it take an investment to double if it grows according to the formula V=537e^.015t? Assume t is in years? (^ is used to show that e has been raised to the .015t power).
Click here to see answer by Fombitz(32388) About Me 

Question 106171: Please help me solve this equation: log2((x^2)+7)=4 (the first 2 is supposed to be small and at the bottom)
Click here to see answer by stanbon(75887) About Me 

Question 106237: 27=3^(5x)*9^(x^2)
Click here to see answer by HyperBrain(694) About Me 

Question 106534: I would appreciate it if u could explain maybe step by step how to solve this problem or at least on like it, and thank you in advanced!
(1/3)^x = 243
i have attempted this problem and i have got it down to (1/3)^x = 27^9
but i am not sure if i am doing this correctly.
And thank you once again.

Click here to see answer by stanbon(75887) About Me 

Question 106619: Exponential equations without using logs. Solve for x:
3^(4x+1)= 27

Click here to see answer by stanbon(75887) About Me 

Question 106647: Exponential equation without logs. Solve for x:
(4/5)^(-4x+5)= 64/125

Click here to see answer by stanbon(75887) About Me 

Question 106644: Exponential equation without logs. Solve for x:
5^(2x+4)= 125^(x-4)

Click here to see answer by stanbon(75887) About Me 

Question 106642: Exponential equation without using logs. Solve for x:
5^(-3x+1)=15625

Click here to see answer by edjones(8007) About Me 
Question 106642: Exponential equation without using logs. Solve for x:
5^(-3x+1)=15625

Click here to see answer by Earlsdon(6294) About Me 

Question 106753: According to the U.S. Census Bureau the population of the United States has been growing at an average of approximately 2% per year. The census is taken every 10 years and the population in 1980 was estimated at 226 million people
c) If the rate of population growth in the U.S. were to continue at about 2%, in about what year would the population in the United States reach and surpass one billion?

Click here to see answer by stanbon(75887) About Me 

Question 106748: Express the following exponential equation as a logarithmic equation:
(256)^.25=4

Click here to see answer by scott8148(6628) About Me 

Question 106898: Express the answer in terms of e. Then use a caculator to obtain a decimal approximation, correct to two decimal places, for the solution.
1.)5In(2x) =20
Evaluate logarithmic
1.)4 In (x + 6) – 3 In x

Click here to see answer by Fombitz(32388) About Me 

Question 106897: Hello and Thank you all (ahead of time)
If the inflation rate is 6%, how much will a house now worth $65,000 be worth in 10years? Please show how to get to this (very thankful, so I can comprehend the steps I need)

Click here to see answer by checkley75(3666) About Me 

Question 107016: find the value and interest earned if $8906.54 is invested for 9 years at 5% compunded a) semiannually
b) continuously
I tried A=Pe(rt)
P=8906.54
r=5%
t=9
but i keep getting a figure different from the book
the book says $13,968.24 ; $5061.70 am I using the wrong formula?

Click here to see answer by scott8148(6628) About Me 

Question 107094: express as a single log: 1/2loga x + 4loga y -1/3loga z
Click here to see answer by solver91311(24713) About Me 

Question 107431: How do u find the exact value for x
that satisy the equation
x-ex%5E-1+=+e%28x-ex%5E-1%29

Click here to see answer by edjones(8007) About Me 

Question 107504: I need help solving exponetial inequalities using logartihms. i can get to this step- 2nlog8=4n+3log52.


Click here to see answer by Edwin McCravy(20059) About Me 

Question 107579: Dear tutor thank you (in advance for answering my question)
The question I wanted to ask is
How do you solve the equation
e%5Ex=4sqrt%28e%5Ex%29-3
I knew that i need to use y to substitute the equation but how?

Click here to see answer by stanbon(75887) About Me 
Question 107579: Dear tutor thank you (in advance for answering my question)
The question I wanted to ask is
How do you solve the equation
e%5Ex=4sqrt%28e%5Ex%29-3
I knew that i need to use y to substitute the equation but how?

Click here to see answer by bucky(2189) About Me 

Question 107732: Simplify the expression:
(1/8)^-2/3 + (1/4)^-1/2
I don't know how to do this! Do I find the LCD first?
(1/8)^-2/3 + (2/8)^1/2

Click here to see answer by solver91311(24713) About Me 

Question 108040: Would you please help me with this problem?
Find the zeros of the polynomial function. If a zero is a multiple zero, state its multiplicity.
P(x)=2x^3-8x^2+7x+6.
Thank you for your help. I really appreciate it.

Click here to see answer by stanbon(75887) About Me 

Question 108041: I would greatly appreciate any help you can give me in working this problem -
Question: Use algebraic procedures to find the exact solutions of the equation.
Problem: log(2x^2+3x)=log(10x+30)
Thank you for your assistance.

Click here to see answer by stanbon(75887) About Me 

Question 108218: 5*3^x=5
Click here to see answer by Fombitz(32388) About Me 

Question 108659: The problem is:
5 + ln x^2 = 4
I have absolutely no idea how to solve this problem.
Please and thank you in advance !

Click here to see answer by scott8148(6628) About Me 

Question 108657: The problem is:
4^2x-7=64
I did 2x -7 * log 4 = log 64
then i did 2x-7 * .602 = 1.806
I'm not sure where to go from here.

Click here to see answer by scott8148(6628) About Me 

Question 108808: The problem is:
5+ ln x^2 = 4
I have absolutely no clue how to solve this problem.
Please and thank you in advance.

Click here to see answer by Fombitz(32388) About Me 
Question 108808: The problem is:
5+ ln x^2 = 4
I have absolutely no clue how to solve this problem.
Please and thank you in advance.

Click here to see answer by Earlsdon(6294) About Me 

Question 108810: The problem is:
Express the exponential function as log functions:
10^x= 1000
My answer is 3.
10^2x+1 =3
My answer is x=.2385
e^3y=1
My answer is x=.7675
Please and thank you in advance.

Click here to see answer by Fombitz(32388) About Me 

Question 108817: Express Log functions as exponentil functions:
a. Log m = 3 my answer:3
b. log 5 =y
c. ln b =2
For B and C I'm extremely unsure of how to do them, I do not even know where to start.
Thank you for your help.

Click here to see answer by stanbon(75887) About Me 
Question 108817: Express Log functions as exponentil functions:
a. Log m = 3 my answer:3
b. log 5 =y
c. ln b =2
For B and C I'm extremely unsure of how to do them, I do not even know where to start.
Thank you for your help.

Click here to see answer by Fombitz(32388) About Me 

Question 108805: The problem is:
5+ ln x^2 = 4
I have absolutely no clue how to solve this problem.
Please and thank you in advance.

Click here to see answer by stanbon(75887) About Me 

Question 108918: hello i need help on this LN problem
ln^x+ln^3x=12

Click here to see answer by Fombitz(32388) About Me 

Question 108943: USING THE LOG PROPERTIES WRITE THE FOLLOWING AS A SINGLE LOG. EXPRESS ANY EXPONENTS AS EXPONENTS RATHER THAN FACTORS
LOG(X^5/X-5) + LOG(3(X-5)/X)-3LOGx

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 109112: Log(Logx)=4
Click here to see answer by stanbon(75887) About Me 

Question 109349: solve for y:
ln(y-1)=x+ln(x)

Click here to see answer by stanbon(75887) About Me 

Question 109465: 9+exponent+a-5+equal+2+exponent+5a-2+
Click here to see answer by nihat(10) About Me 

Question 109818: How do you solve a natural logarithm equation?
Click here to see answer by stanbon(75887) About Me 

Question 109935: I'm stuck on a logarithm problem.
The original problem is log5(the 5 is superscript)square root of x = square root of log(x).
i've gotten as far as logx^(1/5)=square root (log(x))

Click here to see answer by stanbon(75887) About Me 

Question 109940: please help to solve for x. 9^x=1/3
Click here to see answer by stanbon(75887) About Me 

Question 110268: These 3 problems are from a worksheet, not a textbook, and I so desperately need them solved within the next hour, if possible. I tried and cannot work them out. Thanks!
1.Solve the following exponential equation. Your solution should be accurate to 2 decimal places.
41/(1-1e^7x) = 56




2. Solve the following exponential equation. Your solution should be accurate to 2 decimal places.
5e^-5 + 5 = 7



3. Solve the following logarithmic equation. Your solution should be accurate to 2 decimal places.
ln(x-4) + ln(7) = 4
Thank you very much for your help with this tonight.


Click here to see answer by scott8148(6628) About Me 

Question 110200: Please help! Thanks tutors!
log2(x-1) - log2(x+3)= log2(1/x)

Click here to see answer by bucky(2189) About Me 

Question 110372: don't know if you can help but here is the question?
Suppose that 4e^(5x) + 8 = 7e^(5x) - 1. Solve for x

Click here to see answer by TP(29) About Me 

Question 110645: Find the value of x: log x 25/9 = 2
Click here to see answer by josmiceli(19441) About Me 

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910