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

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Question 815329: Solve. help me please ,I want to make sure i"m doing it right.
Thank you
Find the zeroes of the polynomial.
p(x) = 5x4 � 7x3 � 31x2 + 15x + 18

Click here to see answer by ewatrrr(24785)

Question 815674: the lengths of the sides of a right triangle are x, x+4 and x +8 inches. What is the value of x? What is the length of the hypotenuse of the triangle?

Click here to see answer by josgarithmetic(39620)

Question 815880: Use the properties of logarithms to rewrite each logarithm if possible. Assume that all variables represent positive real numbers.
log z x^5 y^3 over 3
The z is dropped down next to the g in log. I'm totally lost and desperately need your help to solve this problem. Thank you so much!
Click here to see answer by ewatrrr(24785)

Question 816208: How do you solve for x: log₄(3x+5) = log₂(4x-3)
Click here to see answer by Edwin McCravy(20059)

Question 816712: solve. 8^2x-3 =1/16
Click here to see answer by ewatrrr(24785)

Question 816712: solve. 8^2x-3 =1/16
Click here to see answer by MathTherapy(10552)

Question 816744: Let f(X)= 5X^2 -X+2 And G(X)=3X-2

(f � G)(X)
Click here to see answer by stanbon(75887)

Question 817713: log base 7 (x+6) - log base7 (x-3)= log base7 4
Click here to see answer by jsmallt9(3758)

Question 817755: In 1990, the resident energy use in the US was responsible for 962 million metric tons of carbon dioxide emissions. Byt the year 2000, that number had risen to 1182 million metric tons. The following function models carbon dioxide emissions, where N in the number of metric tons of carbon dioxide and t is years from 1990
If the emissions grow exponentially and continue at the same rate, what will the emissions grow to by 2050?
Click here to see answer by jsmallt9(3758)

Question 817850: I have a pH problem wherein pH = 2.3
so 2.3=-log[H3O+]
-2.3=log[H3O+]
10superscript-2.3=[H3O+]
The answer I get with the calculator is 199.256
The answer given is 5.0x10superscript-3
How do I get answers like theirs? I don't understand.
Click here to see answer by stanbon(75887)

Question 817155: If you invest $2,000 at a 5% interest, compounded semiannually, how much will you have in 10 years?
Click here to see answer by lwsshak3(11628)

Question 818175: calculate the slope of line segment cd if cd endpoints are (-1,3)and (2,9)

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Question 817151: How long will it take to double an investment compounded continuously at a rate of 7%?
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Question 818727: log(x^2-x-12)+2=log(x-4)

Click here to see answer by jhunjiro(67)

Question 818727: log(x^2-x-12)+2=log(x-4)

Click here to see answer by MathTherapy(10552)

Question 818744: Find the sum of the digits of 10^36-63
Click here to see answer by jsmallt9(3758)

Question 819023: x^2-6x-19=(x+h)^2+k
The answer I have to find looks like this ( )^2+ _____ This is a box shape
This is my first final in college and I couldn't go to study sessions due to snow and ice. I have all other study questions correct.
I would appreciate any help.
Click here to see answer by josgarithmetic(39620)

Question 819018: kh^rs^t
Where r is the exponent of h is:
Where t the exponent of s is:
Where k the leading coefficient is:
I would appreciate any help you can give. I have my first finals this week and all study sessions were cancelled due to snow and ice.
Click here to see answer by Alan3354(69443)

Question 819127: 75=50(x)^(4/12)

Click here to see answer by tommyt3rd(5050)

Question 819486: how do you solve: log base5 √5^6=x
Click here to see answer by stanbon(75887)

Question 819617: solve ech exponentionl eqution for all real solutions
2^15-3x=8
Click here to see answer by Alan3354(69443)

Question 819652: evaluate:
log3 8.69

Click here to see answer by LinnW(1048)

Question 819616: simpplify each expression completely. Your solution must contin no negative exponents
(1/8)^-2/3+3X(5)^0
Click here to see answer by LinnW(1048)

Question 819364: need step by step help with solving
5ln z + ln x/2

Click here to see answer by LinnW(1048)

Question 818780: Given that y=ax^n - 23 and that y=4 when x=3 and y=220 when x=9 find the value of a and n.
Click here to see answer by LinnW(1048)

Question 816206: I am having a hard time solving to graph : g(x)=log base 3^(x+2) + 7
I do not need help with the graphing part but I cannot solve to get the points.
Click here to see answer by LinnW(1048)

Question 814813: find x, 2logx=x/25
Click here to see answer by LinnW(1048)

Question 819899: I am working on trying to write an equation for 2 different certificates of deposit starting with $5000.00 in each. The first is 2 years @ 1.410% APY
The second is 5 years @ 3.04% APY. The two equations that I came up with are
F(X)= 5000(1.410)^2x
F(X)= 5000(3.040)^5x
They don't seem to work
Click here to see answer by jsmallt9(3758)

Question 819620: Solve each exponential equation for all the real solutions
9^2x+1=27^x+5
Click here to see answer by jsmallt9(3758)

Question 816014: Rewrite each of the following as sums and differences of a logarithm of some number.
a. log base 7(4/y)
b. log base 2 (x^4*12)
c. log base 5(10x^3/y^5)
Click here to see answer by LinnW(1048)

Question 811950: 1 + 2^x+1 = 27

Click here to see answer by LinnW(1048)

Question 820003: 2logx log5=log15 log2x I have no idea what I am doing, so some help would be nice please and thank you
Click here to see answer by ortarico(23)

Question 820113: write as the positive logarithm of a single logarithm
2 ln (7x) + 4 ln (x^2)
Click here to see answer by ankor@dixie-net.com(22740)

Question 819841: Find couples m and n if mn-1|n^3-1. Numbers m and n are positive and elements of set N.
Click here to see answer by Edwin McCravy(20059)

Question 820515: If 3^-x=2, what does 3^2x equal?
Click here to see answer by LinnW(1048)

Question 820115: write as the positive logarithm of a single logarithm
log 5 (x^2-1) - log 5 (X+1)
Click here to see answer by LinnW(1048)

Question 820104: write as the positive logarithm of a single logarithm
-ln (1/2)
Click here to see answer by LinnW(1048)

Question 820100: write each expression as a sum or difference of logarithms. express powers as factors
log 3 (3x^3)
Click here to see answer by LinnW(1048)

Question 820101: write each expression as a sum or difference of logarithms. express powers as factors
ln (e^2x)
Click here to see answer by LinnW(1048)

Question 819220: What is (-8)(-8)(-8)(h) written in exponential form?

Click here to see answer by LinnW(1048)

Question 812172: How do you write 10 to the power of -3 divided by 5 to the power of 3 in a power
Click here to see answer by LinnW(1048)

Question 810517: I need help with Part A and Part B!!
a) If 7 ^ x = 43 , then x =
(b) If 14 ^ ( -x ) = 2 , then x =
Click here to see answer by LinnW(1048)

Question 821130: What is x in the following: 3 to power of x = x+3
Click here to see answer by Alan3354(69443)

Question 821338: Paul deposited $500 into an account paying 8% compounded annually, where t=0 represents the year 2001. Find the first year that his account has at least $1,200.
A)2002
B)2005
C)2010
D)2012
Click here to see answer by rfer(16322)

Question 821773: The effectiveness of a drug is given by the formula
Where N is the number of effective particles and t is the time in years.
Plot a graph N against t for values of t from 0 to 5 years
Determine by calculation the half life of the drug (the time it takes for the drug to have half the original number of effective particles)

Click here to see answer by jsmallt9(3758)

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