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

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 Algebra: Exponent and logarithm as functions of power Solvers Lessons Answers archive Quiz In Depth

 Question 35520: how do you solve equations that have different logs: log5(x-4) = log7x, solve for x The 5 and the 7 are little Click here to see answer by narayaba(40)

 Question 35609: I am totally lost. We just started this section last friday and he gave us an example equation but im not following. the direcions for the foirst section say that log3 7= 1.7712 and the problem is log3 49 and i guess it would be for multiplying but otherwise i am totally clueless. i would very much appreciate help!. -Sam Click here to see answer by rapaljer(4667)

 Question 35647: find logcos(pi/5) thanks so much if you can help me Click here to see answer by stanbon(57395)

 Question 35646: help!!! solve, leaving answers in scientific notation find loglog200 what does that even mean? and yes there are two logs here Click here to see answer by stanbon(57395)
 Question 35646: help!!! solve, leaving answers in scientific notation find loglog200 what does that even mean? and yes there are two logs here Click here to see answer by rapaljer(4667)

 Question 35648: write as a single logarithm: 2lne + lne^2+lne^4 thanx! Click here to see answer by stanbon(57395)

 Question 35697: The perimeter of a rectangular backyard is 6x+6 yards. If the width is x yards, find a binomial that represents the length Click here to see answer by Nate(3500)

 Question 35695: Sam lives on a lot that the thought was a square, 157 feet by 157 feet. When he had it surveyed, he discovered that one side was actually 2 feet longer that he thought and the other side was actually 2 feet shorter that he thought. How much less area does he have than he thought he had? Click here to see answer by Nate(3500)

 Question 35816: true or false: bank A offers 6% interest compounded quarterly. Bank B offers 6.1% compounded quarterly. Bank A pays more interest per year. please help me Click here to see answer by stanbon(57395)

 Question 35818: Express as a single logarithm: ln 8 - ln2 these kinda problems get on my nerves , help me please Click here to see answer by rapaljer(4667)

 Question 35862: express as a single logarithm: ln7 + 1/2 ln9 Click here to see answer by rapaljer(4667)

 Question 35860: write the equation in logarithmic from: cube root of e = 1.40 or 3^root of e = 1.40 Click here to see answer by rapaljer(4667)

 Question 35519: please help me solve: log y =log(0.5x-3) + log 2, i'm suppose to express y as a function of x none of the numbers ar little, and i know that the restriction is x>6 Click here to see answer by rapaljer(4667)

 Question 35958: the question is tell wether x and y show direct variation,inverse variation or neither 1.y=3x 2.y=2/x 3.x+y=7 4.xy=5 Click here to see answer by stanbon(57395)

 Question 36238: log a(3x + 5) - log a (x - 5) = log a 8 Click here to see answer by Prithwis(166)

 Question 36237: solve the equation: log a (3x + 5) - log a (x - 5) = log a 8 Click here to see answer by Prithwis(166)

 Question 36234: express the logarithm in terms of log2 M and log2 N: log2 cube root of M^2N Click here to see answer by stanbon(57395)

 Question 36386: Hello, What is the domain and range of f? f(x)= -4x Click here to see answer by Prithwis(166)

 Question 36638: Hi: I need help here! Thanks so very much! Assume that the number of viruses present in a sample is modeled by the exponential function "f(t) = 10t", where t is the elapsed time in minutes. How would you apply logarithms to determine when the sample will grow to 5 billion viruses? Click here to see answer by Paul(988)

 Question 36721: I don't know how to solve this problem: log(base 8)x = 1/3 I got this far: 8^1/3 = x Click here to see answer by josmiceli(9697)

 Question 35521: A sky diver in free fall travels at a speed modeled by V(t) = 176(1 – e – 0.18 t) ft per second after t seconds. How long will it take for the skydiver to attain the speed of 60 mph (note: 60 mph = 88 ft/sec)? Click here to see answer by venugopalramana(3286)

 Question 37055: This question has been bothering me for quite a while now. 4 x 5^(X+2) = 5 x 4^(2X) (big 'X' is the variable, solve for X) I tried taking the log of both sides to get log 4 + (X+2)log 5 = log 5 + (2X)log 4 then group like terms (X+2)log 5 - (2X)log 4 = log 5 - log 4 then I get stuck... any help? Click here to see answer by stanbon(57395)

 Question 37073: True or false, the function f(x) =3x grows three times faster than the function g(x)=X Click here to see answer by stanbon(57395)