# 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 178415: If you deposit P dollars into a bank account paying an annual interest rate r, (expressed as a decimal), with n interest ayments each year, the amount A you would have after t years is A = P(1= r/n)^nt. Marta places \$100 in a savings account earning 2% annual interest, compounded quarterly. If Marta adds no more money to the account, how long will it take the money in the account to reach \$125? How long will it take for MArta's momey to double? Click here to see answer by EMStelley(187)

 Question 178647: A square is inscribed in a circle. If the length of the diagonal of the square is 6.4 cm, What is the area of the shaded region.( The shaded region is inside the circle ad outside the square box.) Click here to see answer by ankor@dixie-net.com(15623)

 Question 178758: (3y^8/2z^2)^4 The power of a quotient rule simplify all variables represent nonzero real numbers I think this should be easy but I am not getting it thanks you for the help Click here to see answer by Fombitz(13828)

 Question 179249: I don't understand how to graph it,how do you get the function?or the domain and range? Click here to see answer by Mathtut(3670)

 Question 179204: (y^1/4)^1/5 =y^r where r the exponent of y is: Click here to see answer by jim_thompson5910(28476)

 Question 179442: Hello dear tutor, I need help with a certain math problem today that we just learned in class, but I can only get how to do really with like an actual example from my homework, which is why I am here, trying to learn! So here is the question! Thanks so much for helping out! it means ALOT! Which grows faster as x increases, x^3, or 3^x? Explain. Click here to see answer by josmiceli(9647)

 Question 179440: Hello dear tutor, I need help with a certain math problem today that we just learned in class, but I can only get how to do really with like an actual example from my homework, which is why I am here, trying to learn! So here is the question! Thanks so much for helping out! it means ALOT! Radon-222 is a gas that escapes from rocks and soil. It can accumulate in buildings and can be dangerous for people who breathe it. Radon-222 decays to polonium and eventually to lead. a. Find the percent decrease in the amount of radon-222 each day. b. Write an exponential decay function for th amount of a 500 mg sample of radon-222 remaining after t days. c. How much of the radon-222 sample would remain after 14 days? Click here to see answer by stanbon(57214)

 Question 179439: Hello dear tutor, I need help with a certain math problem today that we just learned in class, but I can only get how to do really with like an actual example from my homework, which is why I am here, trying to learn! So here is the question! Thanks so much for helping out! it means ALOT! On federal income tax returns, self-employed people can depreciate the value of business equipment. Suppose a compter valued at \$2765 depreciates at a rate of 30% per year. Estimate the number of years it will take for the computer's value to be less than \$350. Click here to see answer by stanbon(57214)

 Question 179676: 12 with a power of X = 527 -how would u solve this? Click here to see answer by Earlsdon(6287)

 Question 179674: -Tessa has an antique plate valued at \$75. It is expected to increase in value 8% per year. a.) how would you write a function for the value of the plate in t years? b.) how would you find out how much it would be worth in 10 years? c.) how would you find out when the plate would reach a value of \$200? Click here to see answer by ankor@dixie-net.com(15623)

 Question 180440: True or false: the function "f(x) =4" grows four times faster than the function "g(x) = x. explain Click here to see answer by Mathtut(3670)

 Question 180574: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? Click here to see answer by Mathtut(3670)

 Question 180573: true or false: the function "f(x)=4^x" grows four times faster than the function "g(x)=x". Explain Click here to see answer by Mathtut(3670)

 Question 180673: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed oon a retangular coordinate system where time in on the horizontal axis. Suppose that the number of homes built can be modeled by a exponential function, H=p*at, where p is the number of homes built in th efirst year recorded. If you were a homebuilder looking for work would you prefer that the value if "a" to be between 0 and 1 or larger that 1? Explain your reasoning Click here to see answer by stanbon(57214)

 Question 180674: How to solve this using logarithm? I manage to get this using calculator and get the answer equals to '2'. [img]http://img26.imageshack.us/img26/6596/gogorm6.png[/img] Click here to see answer by Alan3354(30955)

 Question 181145: solve: square root of x-6- square root of 1/3x=0 Click here to see answer by eperette(173)

 Question 181195: How can I solve ln(4 - 6x) = -1? Thanks so much!!! ~Jill Click here to see answer by Alan3354(30955)

 Question 181335: how do you condense the expression: log3 2x + 3 log3 4x? Click here to see answer by Alan3354(30955)

 Question 181545: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? Click here to see answer by Mathtut(3670)

 Question 181592: How would you plot on a graph the following: f(x) = 5^x Click here to see answer by stanbon(57214)
 Question 181592: How would you plot on a graph the following: f(x) = 5^x Click here to see answer by solver91311(16868)

 Question 181705: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? This is where I am at so far: 60 minutes = 1 hour 300 minutes = 5 hours a cell divides into 2 every 4 minutes 300/4 = 75 75^2 = 5625 I feel that there is something that I missed please look it over and let me know. Thank you Click here to see answer by Mathtut(3670)
 Question 181705: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? This is where I am at so far: 60 minutes = 1 hour 300 minutes = 5 hours a cell divides into 2 every 4 minutes 300/4 = 75 75^2 = 5625 I feel that there is something that I missed please look it over and let me know. Thank you Click here to see answer by stanbon(57214)
 Question 181705: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? This is where I am at so far: 60 minutes = 1 hour 300 minutes = 5 hours a cell divides into 2 every 4 minutes 300/4 = 75 75^2 = 5625 I feel that there is something that I missed please look it over and let me know. Thank you Click here to see answer by solver91311(16868)

 Question 181764: 1. 2x^2+10x+12 Factor completely 2.x^2+8x=-16 3.x^2-16=0 4. x^2-16x=-64 5. 2x^2-12x+10 6.x^2+8x+15=0 7. x^2-x-12=0 Click here to see answer by ankor@dixie-net.com(15623)

 Question 182244: Radioactive iodine is used to determine the health of the thyroid gland it decays according to the equation y=ae*-0.0856t where t is in days find the half life of this substance i dont understand all you are given is the exponent of -0.0856 Click here to see answer by Fombitz(13828)