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

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Question 170666: I need help getting started the equation is 2^3x-4=64: I need help getting started the equation is 2^3x-4=64
Click here to see answer by midwood_trail(260)

Question 170591: simplify e^2e^5: simplify e^2e^5
Click here to see answer by checkley77(3654)

Question 170404: A bacteria culture starts with 120 bacteria and after three hours the population consists of 200 bacteria. assuming that the culture grows exponentially, find the poplation after 5 hours.: A bacteria culture starts with 120 bacteria and after three hours the population consists of 200 bacteria. assuming that the culture grows exponentially, find the poplation after 5 hours.
Click here to see answer by stanbon(19020)

Question 170275: Can someone please explain how to solve the following problem. Your assistance is greatly appreciated!
Express in terms of sums and differences of logarithms
log square root of x^4/yz
: Can someone please explain how to solve the following problem. Your assistance is greatly appreciated!
Express in terms of sums and differences of logarithms
log square root of x^4/yz

Click here to see answer by Earlsdon(3748)

Question 170256: Can someone please explain how to solve the following 2 problems. Any assistance you can provide is greatly appreciated!
the log of (x+5), base 2 + the log of (x-1), base 2 =4
and
the log of 6, base 36 = x: Can someone please explain how to solve the following 2 problems. Any assistance you can provide is greatly appreciated!
the log of (x+5), base 2 + the log of (x-1), base 2 =4
and
the log of 6, base 36 = x
Click here to see answer by Earlsdon(3748)

Question 170203: Can someone show me how to solve the following 2 questions:
4^x-6=16^x
and
e^-2x=0.3: Can someone show me how to solve the following 2 questions:
4^x-6=16^x
and
e^-2x=0.3
Click here to see answer by Fombitz(1756)

Question 170206: Can someone please explain how to answer the following 2 problems? Any assistance is greatly appreciated!
The population of a country doubled in 100 years. What was the exponential growth rate?
and
Solve
ln square root of x-2=1
: Can someone please explain how to answer the following 2 problems? Any assistance is greatly appreciated!
The population of a country doubled in 100 years. What was the exponential growth rate?
and
Solve
ln square root of x-2=1

Click here to see answer by Alan3354(1449)

Question 170020: Please help me with this problem:
If (-10,10) is on the graph y=f(x), what point do you know is on the graph of
f(1/2(x))?
Thank you.: Please help me with this problem:
If (-10,10) is on the graph y=f(x), what point do you know is on the graph of
f(1/2(x))?
Thank you.
Click here to see answer by stanbon(19020)

Question 170170: Explain the relationship, if any, among the following equations.
16^x=2 and 2=logx^16: Explain the relationship, if any, among the following equations.
16^x=2 and 2=logx^16
Click here to see answer by Alan3354(1449)

Question 170173: Explain the relationship, if any, among the following equations.
16^2=x and 16=logx^2: Explain the relationship, if any, among the following equations.
16^2=x and 16=logx^2
Click here to see answer by stanbon(19020)

Question 170160This question is from textbook College Algebra
: I just can't figure out what i'm doing wrong.
N(10)=10000/1+999e^-10

How do you solve this problem?
Can I get help with this problem,too.
P(3636)=(404)3^t/2
How do you solve this?This question is from textbook College Algebra
: I just can't figure out what i'm doing wrong.
N(10)=10000/1+999e^-10

How do you solve this problem?
Can I get help with this problem,too.
P(3636)=(404)3^t/2
How do you solve this?
Click here to see answer by Alan3354(1449)

Question 170129This question is from textbook College Algebra
: I do not understand how to solve this problem.
N(2)= 7000/1+999e^-2
How do you get the answer? I've got the answer. It is 7000/1+(135.199947953)
I don't know what to do to get it . I'm stuck. Thank you for helping me.This question is from textbook College Algebra
: I do not understand how to solve this problem.
N(2)= 7000/1+999e^-2
How do you get the answer? I've got the answer. It is 7000/1+(135.199947953)
I don't know what to do to get it . I'm stuck. Thank you for helping me.
Click here to see answer by Alan3354(1449)

Question 170051: Please help me with:
The speed of the current in a river is 2mph. Jay travels 20 miles upstream and then 20 miles downstream in a total time of 5 1/3 hours. Find the speed of the boat.
Let s be the speed of the boat.
: Please help me with:
The speed of the current in a river is 2mph. Jay travels 20 miles upstream and then 20 miles downstream in a total time of 5 1/3 hours. Find the speed of the boat.
Let s be the speed of the boat.

Click here to see answer by stanbon(19020)

Question 170000: Please help.
Construct and simplify the difference quotient for f(x)= x^2-x.

Thanks: Please help.
Construct and simplify the difference quotient for f(x)= x^2-x.

Thanks
Click here to see answer by stanbon(19020)

Question 169999: Please help me with:
Simplify; 1ne^-3x-4
Thank you.: Please help me with:
Simplify; 1ne^-3x-4
Thank you.
Click here to see answer by Alan3354(1449)

Question 169185: Please help.
Solve:
a) 4^x-6 = 16^x
===================
b) e^-2x = 0.3
Thank you.: Please help.
Solve:
a) 4^x-6 = 16^x
===================
b) e^-2x = 0.3
Thank you.
Click here to see answer by jim_thompson5910(9403)

Question 169950This question is from textbook College Algebra
: I'm struggling with how to solve this problem. I just don't know what to do?
N(2)= 7000/1+999e^-2
How do you solve this?This question is from textbook College Algebra
: I'm struggling with how to solve this problem. I just don't know what to do?
N(2)= 7000/1+999e^-2
How do you solve this?
Click here to see answer by stanbon(19020)

Question 169650: The graph of an exponential function is given. Select the function for the graph from the functions listed.
There is a graph attached to the problem, but I was unable to load it. Start on the x axis at -1,0 bending up to the y axis (1,1). If you would like me to email you the graph, I can.
The following are answers that are avaiable;

f(x) = 4x + 2
f(x) = 4x - 2
f(x) = 4x + 2
f(x) = 4x: The graph of an exponential function is given. Select the function for the graph from the functions listed.
There is a graph attached to the problem, but I was unable to load it. Start on the x axis at -1,0 bending up to the y axis (1,1). If you would like me to email you the graph, I can.
The following are answers that are avaiable;

f(x) = 4x + 2
f(x) = 4x - 2
f(x) = 4x + 2
f(x) = 4x
Click here to see answer by jim_thompson5910(9403)

Question 169643: I really need your help evaluating this- log base four of one sixteenth. I am supposed to use mental math and I have no Idea how to do this. Would you please help me? (Sorry about spelling it out, I don't know how to type numbers with exponents or bases.) : I really need your help evaluating this- log base four of one sixteenth. I am supposed to use mental math and I have no Idea how to do this. Would you please help me? (Sorry about spelling it out, I don't know how to type numbers with exponents or bases.)
Click here to see answer by Alan3354(1449)

Question 169646: Will you please help me with the following problem? I need to express Log base three of twenty seven to the negative third power as a product and then simplify it. I have tried writing it as an exponential equation instead but it didn't go so well. I got stuck once I changed it into Three to the x power is equal to twenty seven to the negative third power. Am I even on the right track? Please help!: Will you please help me with the following problem? I need to express Log base three of twenty seven to the negative third power as a product and then simplify it. I have tried writing it as an exponential equation instead but it didn't go so well. I got stuck once I changed it into Three to the x power is equal to twenty seven to the negative third power. Am I even on the right track? Please help!
Click here to see answer by Alan3354(1449)

Question 169168: Please help me with:
Given that log(a) 16 = 1.7227 and log(a) 3=0.6826 find log(a)48?
all the "a" are subscript.
Thanks

: Please help me with:
Given that log(a) 16 = 1.7227 and log(a) 3=0.6826 find log(a)48?
all the "a" are subscript.
Thanks

Click here to see answer by Alan3354(1449)

Question 169002This question is from textbook college algebra
: can somebody help me solve this equation: This question is from textbook college algebra
: can somebody help me solve this equation:
Click here to see answer by Electrified_Levi(89)

Question 169003This question is from textbook college algebra
: can somebody help me solve this equation This question is from textbook college algebra
: can somebody help me solve this equation
Click here to see answer by Earlsdon(3748)

Question 168996This question is from textbook college algebra
: can somebody help me solve this equation: This question is from textbook college algebra
: can somebody help me solve this equation:
Click here to see answer by Alan3354(1449)

Question 168986This question is from textbook college algebra
: can somebody help me solve this equation: This question is from textbook college algebra
: can somebody help me solve this equation:
Click here to see answer by Alan3354(1449)

Question 168988This question is from textbook college algebra
: can somebody help me evaluate this expression: This question is from textbook college algebra
: can somebody help me evaluate this expression:
Click here to see answer by Alan3354(1449)

Question 168816: Could you please tell me if this is right?
3 log x - log z + 1/4 log y
logx^3-logz+logy1/4
= log x^3 fourth root of y/z: Could you please tell me if this is right?
3 log x - log z + 1/4 log y
logx^3-logz+logy1/4
= log x^3 fourth root of y/z
Click here to see answer by ankor@dixie-net.com(4538)

Question 168767: 2x
e = 8
not sure how to type it but e raised to the 2x = 8: 2x
e = 8
not sure how to type it but e raised to the 2x = 8
Click here to see answer by stanbon(19020)

Question 168767: 2x
e = 8
not sure how to type it but e raised to the 2x = 8: 2x
e = 8
not sure how to type it but e raised to the 2x = 8
Click here to see answer by jim_thompson5910(9403)

Question 168681This question is from textbook
: (1/9)4x=27
using same base principle This question is from textbook
: (1/9)4x=27
using same base principle
Click here to see answer by checkley77(3654)

Question 168654: Can you please help,
.
Can you please confirm my answer
Solve
.
I got this answer , is this true?
.
Can you please answer as soon as you can, thanks
.
Thanks ahead of time, Levi: Can you please help,
.
Can you please confirm my answer
Solve
.
I got this answer , is this true?
.
Can you please answer as soon as you can, thanks
.
Thanks ahead of time, Levi
Click here to see answer by jim_thompson5910(9403)

Question 168632: Hi, Can you please help,
.
Solve , for "x"
.
Thanks ahead of time, Levi: Hi, Can you please help,
.
Solve , for "x"
.
Thanks ahead of time, Levi
Click here to see answer by Alan3354(1449)

Question 168634: Hi, Can you please help,
.
Solve , for "x"
.
I would like some answers quickly, so I can put it down for notes for a quiz tommorrow.
.
Thanks ahead of time, Levi: Hi, Can you please help,
.
Solve , for "x"
.
I would like some answers quickly, so I can put it down for notes for a quiz tommorrow.
.
Thanks ahead of time, Levi
Click here to see answer by stanbon(19020)

Question 167970: How do I solve for x?
Log x 1/64= -3 : How do I solve for x?
Log x 1/64= -3
Click here to see answer by jim_thompson5910(9403)

Question 167957: Simplify the expression.Variables represent positive real numbers. n^1/5(n^2/5-n^-1/5)
How do I complete this problem?: Simplify the expression.Variables represent positive real numbers. n^1/5(n^2/5-n^-1/5)
How do I complete this problem?
Click here to see answer by nerdybill(1129)

Question 167935: Please help me with the following:
Express as a single logarithm and, if possible, simplity.

ln 2x + 3(1n x - ln y)
Thanks: Please help me with the following:
Express as a single logarithm and, if possible, simplity.

ln 2x + 3(1n x - ln y)
Thanks
Click here to see answer by nerdybill(1129)

Question 167904: Please help with this question "Express as a single logarithm and, if possible, simplity."
1. 2/5 log(a)x - 1/3 log(a) y
2. ln 2x + 3(1n x - ln y)
Thank you.: Please help with this question "Express as a single logarithm and, if possible, simplity."
1. 2/5 log(a)x - 1/3 log(a) y
2. ln 2x + 3(1n x - ln y)
Thank you.
Click here to see answer by jim_thompson5910(9403)

Question 167820: Simplfy by removing non-positive exponents: x to the -1 plus y to the -1 divided by x squared minus y squared.: Simplfy by removing non-positive exponents: x to the -1 plus y to the -1 divided by x squared minus y squared.
Click here to see answer by nerdybill(1129)