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

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Question 195310: How do you algebraically find the solution to the following problem?
log(79-3x) + log(x) = 2
Click here to see answer by ankor@dixie-net.com(6691)

Question 195310: How do you algebraically find the solution to the following problem?
log(79-3x) + log(x) = 2
Click here to see answer by solver91311(5072)

Question 195448: Open-Ended Give an example of an exponential equation whose
solution is a negative number.
Click here to see answer by J2R2R(44)

Question 195449: Write each expression as a single natural logarithm.
30. 2 ln 10 - ln 5
31. 5 ln a + 3 ln b
32. 2 ln z - 1/2
(ln x 1 +3 ln y)
Click here to see answer by windsolace(8)

Question 195453: Writing.. Describe the effect of different values of a on the function y = ab^x.
Click here to see answer by solver91311(5072)

Question 195452: Investment You put $2000 into an account earning 4% interest
compounded continuously. Find the amount at the end of 8 yr.
Click here to see answer by Mathtut(3670)

Question 195452: Investment You put $2000 into an account earning 4% interest
compounded continuously. Find the amount at the end of 8 yr.
Click here to see answer by solver91311(5072)

Question 195450: Write each logarithmic expression as a single logarithm.

24. log 2 + 3 log 1 2
25. log a - log ab
Click here to see answer by Alan3354(6059)

Question 195522: Ok so I have the solutions to the problem...but I keep coming up with the wrong answer and I don't understand why. Here's the problem:

The instructions are to solve each equation or inequality. Round to four decimal places.
Here's what I've tried:

The book says that the solution is 3.716
Click here to see answer by Edwin McCravy(2920)

Question 195736: These are problemsusing expotential equations. Any help you could offer would be greatly appreciated because I am struggling with these. Thank you.
1. The volume of a cubical bin is 27 cubic feet. What are the length, width, and height?
2. The formual for nth term b of a geo series is b=ar to the n-1
Find n when b=1024 a=16 4-2
3. If a set has three elements, how many subsets does it have?
Click here to see answer by jim_thompson5910(13787)

Question 196459: how do you find the inverse function f^-1(x) for f(x)=2(3)^x?
Click here to see answer by nerdybill(2446)

Question 196307: 2x+3y=100----1
4x+5y=50----2

Get X & Y...

Click here to see answer by Alan3354(6059)

Question 196834: How do you get the answer to x squared minus 14<15
Click here to see answer by stanbon(26259)

Question 196994This question is from textbook Algebra 2
: log5 x- log5 2This question is from textbook Algebra 2

Click here to see answer by user_dude2008(715)

Question 197035: find the inverse
y=logyofX
Click here to see answer by edjones(3291)

Question 197204: 5a/b^-3
Click here to see answer by edjones(3291)

Question 197207: 2x^3(x^2+7)
Click here to see answer by edjones(3291)

Question 197207: 2x^3(x^2+7)
Click here to see answer by Mathtut(3670)

Question 197206: _2a^2(4a^3b^3)
Click here to see answer by Mathtut(3670)

Question 197205: 2(m^3h^4Z^-9)
Click here to see answer by Mathtut(3670)

Question 197260: solve the equation
2^5x=8^x+6
please help me solve this equation
Click here to see answer by jim_thompson5910(13787)

Question 197351: solve for x.
9^(x+2) = 3^7
Click here to see answer by scott8148(3382)

Question 197347: Simplify the following exponential expression. Do not leave negative exponents.
(x^-3 y^2)^2/(x^4y^3)^3
Click here to see answer by solver91311(5072)

Question 197411: Evaluate log base 4 of 384; log base four of three is approximately .79
Click here to see answer by Alan3354(6059)

Question 197600: 5000=750(1.02)^(4t)
Click here to see answer by nerdybill(2446)

Question 197740: write an equation for the line that contains the point (4,-1) and is perpendicular to the equation y= -2/3x + 7
Click here to see answer by RAY100(1637)

Question 197821: SImplify the expression log(4)64.
Click here to see answer by edjones(3291)

Question 197820: Express log(2)64-log(2)4 as a single logarithm. Simplify as possible.
Click here to see answer by stanbon(26259)

Question 197734: write an equation for the line that contains the point (7,0) and is perpendicular to the equation y= -12x - 8
Click here to see answer by Mathtut(3670)

Question 197733: write an equation for the line that contains the point (4,-1) and is perpendicular to the equation y=2/3x + 7
Click here to see answer by Mathtut(3670)

Question 197953: The concentration C of a drug in the bloodstream at time t (in hours) can be approximated by C=100(1-e^-0.5t). What will the concentration be after 8 hours?
I am lost..... Please help. Thanks.
Click here to see answer by jim_thompson5910(13787)

Question 198117: Evaluate this logarithm.. :)?
log[8]1/256
[] means its the number is the base.
thanks for helpin
Click here to see answer by stanbon(26259)

Question 198137: use the change of base formula to rewrite each expression using common logarithms.
[] number in it is the base.. thanks a bunch for helpin
1. log[4]12
2. log[2]5
3. log[8]14
Click here to see answer by RAY100(1637)

Question 198120: please graph this logarithemic function.. thanks big time:)
[] means the number in it is the base..
y=log[1/2]x
Click here to see answer by arallie(162)

Question 198116: Describe how the graph of each function is related to the graph of its parent function?
please note that [] means the whole thing is ^.. thanks
1. y=-2^[x]+1
2. y=3^[x-4]
3. y=5^[x+1]-2
Click here to see answer by arallie(162)

Question 198196: Solve log{10}(.04) when log{10}(5)=.7
Click here to see answer by Edwin McCravy(2920)

Question 198196: Solve log{10}(.04) when log{10}(5)=.7
Click here to see answer by stanbon(26259)

Question 198118: please graph this logarithemic function.. thanks big time:)
[] means the number in it is the base..

1. y=3-log[3]x
Click here to see answer by anantha(74)

Question 198276: please graph this logarithmic function.. or give me the points.:)
y=log[1/2]x
[] number in it means base. thanks for helpin me:)
Click here to see answer by solver91311(5072)

Question 198278: write an exponential function of the form y=ab^x that includes the given points..

(-1,3/8),(1,3/2)

thanks for the help
Click here to see answer by stanbon(26259)

Question 198275: please graph this logarithmic function.. or give me the points.:)
y=log[4](x+1)

[] number is the base... thanks for helpin
Click here to see answer by stanbon(26259)

Question 198274: solve
LN(x^2+10)>LNx+LN7
Click here to see answer by edjones(3291)

Question 198272: solve
log4(4b+14)-log4(b^2-3b-17)=1/2
Click here to see answer by edjones(3291)

Question 198273: solve
LN(x+3)+LNx=LN4
Click here to see answer by nerdybill(2446)

Question 198119: please graph this logarithemic function.. thanks big time:)
[] means the number in it is the base..
y=log[4](x+1)
Click here to see answer by ankor@dixie-net.com(6691)

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