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

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

Question 480430: Solve the following equations algebraically. Approximate the result to 3 decimal places.
2^x-1=27

Click here to see answer by Tatiana_Stebko(1539)

Question 480821: Qus-
e^(1.57/0.866) by calculation not using any table
Click here to see answer by richard1234(7193)

Question 481218: Compound Interest formula:
A= P(1+(r/n))^nt
I have to use this formula to answer this question:
Determine how much time is required for an investment to double in value if interest is earned at a rate of 6.25% and compounded annually?
Please give me a detailed answer, I have tried using the formula myself but I keep getting stuck and am not having much success.
Thank you in advance for all your help! I really do appreciate it.
Click here to see answer by Theo(13342)

Question 481976: Determine how much time is required to triple your money if interest is 5.75% and is compounded daily?
I have to use the compound interest formula: A=P(1+(r/n))^nt
Thank you, in advance!
Click here to see answer by Alan3354(69443)

Question 482011: how do you solve e^.05t=1600

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Question 482068: convert to logarithmic equations.
e^x = 7
Click here to see answer by richard1234(7193)

Question 482309: 36 ^ x = √6
Click here to see answer by stanbon(75887)

Question 482576: (16x^2y)^3/4
please help me solve this problem, I'm very confused !
Click here to see answer by mathstutor494(120)

Question 482844: (3.5*10^-3)(5.8*10^5)
Click here to see answer by Alan3354(69443)

Question 483478: 1- (x-5)/5 = (x+6)/4 - (4x-1)/20

Click here to see answer by stanbon(75887)

Question 483618: Is 4.48*10^35 greater than 6*10^18
Click here to see answer by rfer(16322)

Question 483877: Express as a single logarithm: log(base b)9 + log(base b) 50
Click here to see answer by stanbon(75887)

Question 484172: How do you solve (3k to the fourth power) to the fourth power
Click here to see answer by jorel1380(3719)

Question 484172: How do you solve (3k to the fourth power) to the fourth power
Click here to see answer by chessace(471)

Question 484242: How do I rewrite the exponential expression 16^3x to have a base 2? Thank you!
Click here to see answer by jim_thompson5910(35256)

Question 484241: I'm having trouble with this problem. Thanks for your help.
Solve. Express x as a logarithm if necessary.
e^(x)+e^(-x)=4
Click here to see answer by jim_thompson5910(35256)

Question 484241: I'm having trouble with this problem. Thanks for your help.
Solve. Express x as a logarithm if necessary.
e^(x)+e^(-x)=4
Click here to see answer by chessace(471)

Question 484565: The given equation involves a power of the variable. Find all real solutions of the equation. (If there is no real solution, enter NO REAL SOLUTION.)
8x2/3 − 200 = 0
Solve the equation for the indicated variable.
V = 1/3πr2h;for r

Click here to see answer by stanbon(75887)

Question 484753: I have to answer this expontioal equation using logs question and I am stuck help please
N = 901 x 1.036t
t stands for years and n number of journeys,
need to find year when journeys exceed 15 million
using logs.
please show workings so I can understand
Click here to see answer by lwsshak3(11628)

Question 484833: 150*(1.017)^18=
need answers and how to actually know the steps to take to solve problem. Thanks so much!
Click here to see answer by checkley79(3341)

Question 485672: (2t+3)^3
Perform indicated operations and simplify. Please help!
Click here to see answer by MathLover1(20850)

Question 485962: e^(x2+5x+6)=1
The use of the "e" value causes me confusion with these questions.
Click here to see answer by Edwin McCravy(20059)

Question 486454: 30x^2y^5/-6x^8y^-3
Click here to see answer by Tatiana_Stebko(1539)

Question 486889: Solve for x using logs.
2^x=e^(x+5)
I know im supposed to use ln, but I get stuck after that.
Please help, thanks.
Click here to see answer by John10(297)

Question 489067: What is the exponential equation for log4 1/64=-3
Click here to see answer by chessace(471)

Question 491369: please help me solve 2^(x-1)=5^(2x+6)
Click here to see answer by ptth176(50)

Question 491994: 2 log x - log 4 = 2
Click here to see answer by nerdybill(7384)

Question 492151: 9)
Use radical notation to rewrite the expression and simplify if possible:
1000 to the 2/3 power (can't make the 2/3 go up top to the side of the 1000..sorry).
Click here to see answer by chessace(471)

Question 494368: simplify (-3xy^4)(-4x^3y^6)
Click here to see answer by chessace(471)

Question 494370: simplify {(1/4)^2-(1/2)^3}x3^2
Click here to see answer by chessace(471)

Question 494965: Please help me with this problem: (x-3)raised to the fraction power of 2/3 =25
Click here to see answer by ankor@dixie-net.com(22740)

Question 498795: -2 3
(p/q) * 121/100=1. find (p/q)
i have put power of -2 on (p/q)in first case and power of 3 in second case.
Click here to see answer by Alan3354(69443)

Question 498794: the fourth power of a rational number is 2401/4096.find the number.
Click here to see answer by Alan3354(69443)

Question 498808: the fourth power of a rational number is 2401/4096.find the number.
Click here to see answer by richard1234(7193)

Question 502982: How to use exponential to solve the following equation (i) 4e(to the power 3t+5) = 4/e(to the power t)
Click here to see answer by jrb1965(16)

Question 502985: How to use exponentials to solve the following equation. (ii) 7+3e(to the power x)=3/e(to the power x+6) +7
Click here to see answer by ankor@dixie-net.com(22740)

Question 503374: This is regarding my previous question which i made a mistake, the actual doubt I have is
How to make x the subj of y=e^2x
Thank you
Click here to see answer by Alan3354(69443)

Question 503373: how to make y the subject on the equation y=e^2x
Click here to see answer by Alan3354(69443)

Question 503472: 24+6e(to the power -0,3t)=225
Click here to see answer by nerdybill(7384)

Question 506542: what the answer for x+5(x+3)=27
Click here to see answer by Gogonati(855)

Question 507520: solve log(3x+4)=2log(x)
Click here to see answer by nerdybill(7384)

Question 507520: solve log(3x+4)=2log(x)
Click here to see answer by Earlsdon(6294)

Question 507228: n^2+4n-12
Click here to see answer by jim_thompson5910(35256)

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