# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 817028: 2+log base3 ^(2x+5)- log base3^x = 4 , I can not figure out how to work it out properly. the answer is 5/7 Click here to see answer by jsmallt9(3437)

 Question 817148: There are currently 68 million cars in a certain country, increasingly by 1.8% annually. How many years will it take until this country has 81 million cars? Click here to see answer by jsmallt9(3437)

 Question 817220: expand the equation log^4 square root of x+2 / x^5(x^2+4) Click here to see answer by jsmallt9(3437)

 Question 817197: Hello, I've been really struggling with logarithms. Express as a single logarithm. 1/2 (log3 (x-5) - log3 x) Help please! Click here to see answer by stanbon(60771)

 Question 816824: rewrite so that your answer does not contain logarithms, of any product, quotient or power? a) Log(base)2 ((x+2)^2(x+1)/x^3(x-2)^2) b) ln((x^2(x+2)^2)/(x+4)^3) Click here to see answer by Edwin McCravy(9716)

 Question 816799: What is the first step in solving this logarithmic equation: log3(2x-1) = log3(5x) Click here to see answer by ewatrrr(11148)

 Question 816636: Can you help me solve this problem Solve. Log5 (3x+1)- Log5 4=2 Click here to see answer by jsmallt9(3437)

 Question 816599: How do you solve P to the (t)= 18,000 (.988) to the power of (t)? Click here to see answer by Alan3354(34674)

 Question 816085: 2log base 3 of y +1/3 log base 3 of x - (log base 3 of 5 + 2 log base 3 of 3) Thanks! Click here to see answer by jsmallt9(3437)

 Question 815940: find the value of x: log6 (5x+9)=4 a. 3 b. 817.4 c. 261 d. 257.4 I have no clue where to even start with this problem. ive tried pluging the answers in the calculator but havnt had luck with that Click here to see answer by jsmallt9(3437)

 Question 816204: If (log 2 base √x)^2 = log 2 base x , then what is the value of x. Click here to see answer by jsmallt9(3437)

 Question 816100: Please help me solve this question. Thank you The number of rabbits in a certain area is increasing exponentially. If the number of rabbits increases from 200 to 300 in 8 months, find the number of rabbits after 2 years(from the initial 200). Click here to see answer by josgarithmetic(3308)

 Question 815994: how to solve 1/2logC + 9logD AS A SINGLE LOG Click here to see answer by josmiceli(10616)

 Question 815650: write log(4(x^1/4))/log(y^3) as a sum, difference, and/or multiple of log 4, log x, and log y Click here to see answer by jsmallt9(3437)

 Question 815816: 5 log 3 + log 4 in single logarithm Click here to see answer by jsmallt9(3437)

 Question 815429: How do I get the following logarithm as a singke term that doesn't contain a logarithm e^(9-6ln (x)+ln (y)) Click here to see answer by jsmallt9(3437)

 Question 815388: Compare the quantities and if two are equal explain why. log_7 sqrt(70), log_7 35, 1/2+log_7 sqrt(10) In particular I am having difficulty understand how to contrast the 1/2+log_7 sqrt(10) to the other numbers. Click here to see answer by Alan3354(34674)

 Question 815322: write 1/2 logaX + 1/2 logaY - 3/4 logaZ as a single logarithm Click here to see answer by ewatrrr(11148)

 Question 815266: Suppose \$2500 is invested at a rate of 7% per year compounded monthly. (round answer to the nearest cent.) Find the principal after 1 month Find the principal after 6 months Find the principal after 1 year Find the principal after 20 years Im stuck at this point 1000(1+0.07/12)^12t= I dont know how to get the answer from this point on. Thank you! Pamela Click here to see answer by MathTherapy(1817)
 Question 815266: Suppose \$2500 is invested at a rate of 7% per year compounded monthly. (round answer to the nearest cent.) Find the principal after 1 month Find the principal after 6 months Find the principal after 1 year Find the principal after 20 years Im stuck at this point 1000(1+0.07/12)^12t= I dont know how to get the answer from this point on. Thank you! Pamela Click here to see answer by josgarithmetic(3308)

 Question 815145: A law of physics states that the intensity of sound is inversely proportional to the square of the distance d of the source I: k/d^2 a. Use this model and the equation B=10log(I/I0) to show that the decibel levels B1 and B2 at distances d1 and d2 from a sound source are related by the equation B1= B2-20log(d1/d2) I'm a little confused. Help? Click here to see answer by jsmallt9(3437)