# 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 607736: Please help me solve this math problem: Graph the function.State the domain and range. y=log3(x+1) I have a scientific calculator and I forgot how to plug the numbers in when using log I would appreciate it if you can help me with that too thanks! Click here to see answer by jim_thompson5910(28717)

 Question 607813: logx+2-log2x-2=4 the two's are bases. its a log base 2 x+2 minus log base 2 x-2=4 Click here to see answer by ewatrrr(10682)

 Question 607998: The attenuation of a 900 MHz mobile phone signal by a concrete wall reinforced with steel mesh is described by, I(t)=1.2e^(-0.138t) where t is the thickness of the wall in cm, and I(t) is the intensity of signal, in mW/m2, measured on the interior of the wall. (a) What is the signal intensity incident on the exterior of the wall? (a) Answer - I think is t=0 900=1.2e^1.2^-0.138*0 900=1.2*1 900/1.2=1.2*1/1.2 750=1 750/1=0 750 (b) If the wall is 25 cm thick, what intensity will be measured inside? Round your answer to 2 decimal places. (b) Answer - I think is 750=1.2e^-0.138*0.25 750=1.2e^-0.0345 750/1.2*0.966088=1.2*0.966088/1.2*0.966088 646.9389952 Approx =647 (c) What thickness of wall will drop the intensity to half of the exterior value? Round your answer to 2 decimal places. (c) Not sure a bit lost Click here to see answer by scott8148(6628)

 Question 607865: how do you graph the logarithmic equation y= 1/3^(x-1) ? Click here to see answer by richard1234(5390)

 Question 608504: Solve for x by factoring completely: x^4 - 1 Click here to see answer by flame8855(424)
 Question 608504: Solve for x by factoring completely: x^4 - 1 Click here to see answer by lynnlo(4169)

 Question 608532: I need help with the following problems: 1. 2log base 8 4- 1 over three log base 8 8 2. Log base 10 (b+3)+log base 10=log base 10 4 3. Log base 5 5^7 4. Log base x 7= 1 half Click here to see answer by ewatrrr(10682)

 Question 608968: An investment of \$20000 receives interest of 10.5 percent per year compounded continuously.what is the compound amount S if the investment is for a period of 25 years?How much Interest will be earned during this period? Click here to see answer by ewatrrr(10682)

 Question 609284: Solve 6 to the 6x power=31 round to the nearest thousandth Click here to see answer by Alan3354(31538)

 Question 609304: Find the domain written in set-builder notation: y=lnx Click here to see answer by richard1234(5390)

 Question 609363: At a certain school, the number of children entering kindergarten increased by 6.7% annually for 5 years then decreased by 4.2% annually in the next 5 years. If 110 children enrolled in kindergarten at the beginning of this period, how many were enrolled after 10 years? Click here to see answer by stanbon(57984)

 Question 609688: Use the Change of Base Formula to solve Round to the nearest ten-thousandth. Click here to see answer by Alan3354(31538)
 Question 609688: Use the Change of Base Formula to solve Round to the nearest ten-thousandth. Click here to see answer by jsmallt9(3296)

 Question 610818: log base2 (3)+log base 2 (x)= log base 2 (X+7) Click here to see answer by jsmallt9(3296)

 Question 611139: Solve for X, and just for real numbers log(X+4)+log10(X-5)=1 Click here to see answer by stanbon(57984)

 Question 611462: Write and exponential function y=ax^b for a graph that includes (2,-12) and (4,-48) Click here to see answer by jsmallt9(3296)

 Question 611825: Find the range of the function y = -2^x + 2. Click here to see answer by jsmallt9(3296)

 Question 612071: Solve: log(base 2) x - 2log(base2) (x-1) = 1 Click here to see answer by lwsshak3(6764)

 Question 612539: Show that log(base p)q = (log(base q) p)^-1 Click here to see answer by solver91311(17077)

 Question 612318: Find the maximum power of 91 for which 3*6*9*12....*228*231 is completely divisible? Click here to see answer by richard1234(5390)

 Question 612902: write an exponential equation whose graph passes through the given points (1,5) (2,7) Click here to see answer by jim_thompson5910(28717)

 Question 613763: Hi! how would you solve something like: lnx+ln2=3, i condensed it down to ln2x=3 and i think that's right, but i'm not sure how to solve for x. Thank you so much!!! My test is tomorrow. (ln is the natural log) Click here to see answer by scott8148(6628)

 Question 613765: Hi! How would you solve log base 2 of x + log base 2 of (x+3) = 2? Thanks for your help!!! Click here to see answer by scott8148(6628)

 Question 614561: If = where x and y are greater than 0, show that Click here to see answer by solver91311(17077)
 Question 614561: If = where x and y are greater than 0, show that Click here to see answer by lwsshak3(6764)