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 196459: how do you find the inverse function f^-1(x) for f(x)=2(3)^x?
Click here to see answer by nerdybill(7384)

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

Get X & Y...

Click here to see answer by Alan3354(69443)

Question 196834: How do you get the answer to x squared minus 14<15
Click here to see answer by stanbon(75887)

Question 196994: log5 x- log5 2
Click here to see answer by user_dude2008(1862)

Question 197035: find the inverse
y=logyofX
Click here to see answer by edjones(8007)

Question 197204: 5a/b^-3
Click here to see answer by edjones(8007)

Question 197207: 2x^3(x^2+7)
Click here to see answer by edjones(8007)

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(35256)

Question 197351: solve for x.
9^(x+2) = 3^7
Click here to see answer by scott8148(6628)

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(24713)

Question 197411: Evaluate log base 4 of 384; log base four of three is approximately .79
Click here to see answer by Alan3354(69443)

Question 197600: 5000=750(1.02)^(4t)
Click here to see answer by nerdybill(7384)

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(8007)

Question 197820: Express log(2)64-log(2)4 as a single logarithm. Simplify as possible.
Click here to see answer by stanbon(75887)

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(35256)

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(75887)

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(20059)

Question 198196: Solve log{10}(.04) when log{10}(5)=.7
Click here to see answer by stanbon(75887)

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(86)

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(24713)

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(75887)

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(75887)

Question 198274: solve
LN(x^2+10)>LNx+LN7
Click here to see answer by edjones(8007)

Question 198272: solve
log4(4b+14)-log4(b^2-3b-17)=1/2
Click here to see answer by edjones(8007)

Question 198273: solve
LN(x+3)+LNx=LN4
Click here to see answer by nerdybill(7384)

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(22740)

Question 198359: solve for x
-.5log(7)^x=log(7)^.5
Click here to see answer by jim_thompson5910(35256)

Question 198546: solve:
7^n+3=80
Click here to see answer by jojo14344(1513)

Question 198550: solve:
log6(5-2a)-log6(3a)=1
Click here to see answer by nerdybill(7384)

Question 198550: solve:
log6(5-2a)-log6(3a)=1
Click here to see answer by stanbon(75887)

Question 198549: solve:
log3^(x-3)+log3^(x+2)=log3^6
Click here to see answer by nerdybill(7384)

Question 198548: solve:
10^x+3>100^x-1
Click here to see answer by jim_thompson5910(35256)

Question 198621: What is the inverse of the function y=2ln(x-5)
My answer choices are:
A) y= (x/ln2)+5
B) x= (y/ln2)+5
C) y= 2e^(x-5)
D) y= e^(2x)+5
E) y= e^(0.5x)+5
I think it's A but I'm not sure. Please help!
Click here to see answer by stanbon(75887)

Question 198636: Simplify log2 2^5
Click here to see answer by stanbon(75887)

Question 198661: I need help solving:
log(3x-2)^4=12
Click here to see answer by ankor@dixie-net.com(22740)

Question 198742: Solve log x =5
I've tried putting this equation into my calculator but it doesn't come up with the answer my teacher gave me.
This is from an exam review, not a book.
Click here to see answer by solver91311(24713)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910