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

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 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(60771)

 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(18785)
 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 Alan3354(34674)

 Question 198822: I cannot figure out how to solve this to the nearest hundredth. ln x= -3.7 Click here to see answer by Earlsdon(6294)

 Question 199063: Use the base-change formula to find the logarithm to 4 decimal places. log base 8 X 8.69 Click here to see answer by RAY100(1637)

 Question 199773: I'm not sure how to work out this problem with step by step Click here to see answer by rfer(13569)

 Question 199907: If the population in New York was 107.4 million in the year 2006 and it continues to grow at an annual rate of 1.43% then the population in 2028 will be 107.4(1.0143)14 power. Find the predicted population in 2020 to the nearest 10th of a million My team mates and I can not figure out how to lay out the equation for this one. So we thought 2020=2006= 14yrs. and 2028-2020 = 8 yrs difference. then multiply the 1.43 x 12 x 8 ????? I'm/were confused. Click here to see answer by jim_thompson5910(29613)

 Question 199836: 7 ^n=12 8^n+1=3 log 3x=2 4log x=4 I can't figure how to solve these. Click here to see answer by Alan3354(34674)

 Question 199845: 3. What are the asymptotes of the functions "f(x) = 4x" and "g(x) = log5x"? Click here to see answer by RAY100(1637)

 Question 199843: If log[b]x = y is true if b^y = x how are the graphs related? Click here to see answer by RAY100(1637)

 Question 200331: not sure if I have the right area consider the following 6x^3/5+5square root symbol x inside-6/3square root symbol x inside use the power rule for differentiation to find f'(x). Give your answer using the form below where B>D>F f'(x)=Ax^B+Cx^D+Ex^F can someone help please Click here to see answer by solver91311(18785)

 Question 200488: For the exponential functions e^x and logarithmic function logx graphically show the effect if x is halved. Include a table of values for all for functions. Please can someone graph this for me my calculators on my system cannot do these and I am clueless. Thank You. Click here to see answer by solver91311(18785)

 Question 200746: find the relative maximum and relative minimum values of the function below. f(x)=x^3+9x^2+15x-7 relative maximum: -5, _____ relative minimum: -1, ______ can not figure out the _____ part can someone help please thanks Click here to see answer by RAY100(1637)

 Question 200749: Find all the points of inflection of the function f(x)=8x^2-2x^4 find point with smaller x-value find point with larger x value can someone help please Click here to see answer by Alan3354(34674)
 Question 200749: Find all the points of inflection of the function f(x)=8x^2-2x^4 find point with smaller x-value find point with larger x value can someone help please Click here to see answer by Earlsdon(6294)

 Question 200743: can someone help please My teacher is asking which of these statements is/are true select all that apply 1. if F(x)=f(x)*g(x), then F'(x)=f'(x)*g'(x) 2. if c is a constant, then d/dx(c*f(x))=c*d/dx(f(x)) 3. if c is a constant, then d(c)/dx=0 4. if F(x)-f(x)+g(x), then F'(x)=f'(x)+g'(x) 5. if F(x)=f(x)*g(x), then F'(x)=f(x)*g'(x)+g(x)*f'(x) 6. none of these 7. if k is a real number, then d(x^k)/dx=kx^k-1 thanks a bunch Click here to see answer by jim_thompson5910(29613)

 Question 200907: find y' when y=ln(x+2)/(x^2+1) this problem has the big ( around all) thanks for help Click here to see answer by jim_thompson5910(29613)

 Question 200966: log2x-log9x-2=1 A:2.431 log5(z-3)=2 A: z=28 can you please give me step by step in solving these problem Click here to see answer by stanbon(60771)

 Question 200908: The half life of cobalt-60 is 5.3 years. a.) find its decay rate b.) If you initially have 15 grams of this material, how long until only 10 grams remain? I am having trouble can someone help Click here to see answer by RAY100(1637)

 Question 201150: Evaluate:2(2-8)divided by 12 divided by 7(3-6)= here a problem I am struggling with in pre algebra. Thanks Janet Click here to see answer by rfer(13569)

 Question 201027: can someone help with these two questions thanks 1.)find y' when y=7^2^x this problem is 7 with the 2x are small 2.) find y' when y=x^5 5^x this problem is x to the power of 5 then 5 to the power of x thanks so much Click here to see answer by solver91311(18785)

 Question 201242: Write the transformed function f(x) = 8^x is horizontally compressed by a factor of 2. How would i slove this? In general functions are compressed horizontally by a factor of two when you replace the 'x' in the function with '2x'. The solution for this particular problem would be: f(x) = 8 ^(2x) This can be simplified... f(x) = 8 ^ (2 * x) f(x) = (8 ^ 2) ^ x f(x) = 64 ^ x Click here to see answer by jsmallt9(3438)

 Question 201276: solve for x log 10^x + log 10^(x-15)=2 Click here to see answer by scott8148(6628)

 Question 201313: not sure how to set up and do an airport shuttle has an average of 1200 passengers per day and charges 15 per ride. Each 1 dollar increase in fare results in a loss of 50 riders. What should the fare be to maximize the revenue? can someone help please thanks Click here to see answer by stanbon(60771)

 Question 201333: question on worksheet. can someone help please thanks thanks Suppose that a population that is exhibiting exponential growth triples after 8 years. What will the population be after 16 years if the original population was 10000? Click here to see answer by Alan3354(34674)

 Question 201350: Find the present value of \$15000 due 5 years later at 6.1% compounded continuously. not sure how to set this up due the compounded continuously. can someone help please thanks Click here to see answer by Alan3354(34674)