# 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 267560: At 2pm the number of bacteria in a colony was 100, by 4pm it was 4000. Write an exponential function to model the population y of bacteria x hours after 2pm. Please help Click here to see answer by ankor@dixie-net.com(15658)

 Question 267864: i dont understand how i would get an answer for 12x8/4x4 i'm trying to understand how to get the answer Click here to see answer by stanbon(57377)

 Question 267982: Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Show your work. Use the resulting ordered pairs to plot the graph State the equation of the line asymptotic to the graph (if any). y=-(1/5)^x How do I show how I come up with the numbers? Click here to see answer by richwmiller(9143)

 Question 267905: I am having difficulty on the steps to solve this equation: e^-x = (e^4)^x+3 Any help would be greatly appreciated! Click here to see answer by ankor@dixie-net.com(15658)

 Question 268474: i need help with polynomials it says to state the degree and leading coefficient of each polynomial in one variable. if it is not a polynomial in one variable,explain why. Q1. a+8 it also says for each graph describe the end behavior, determine whether it represent an odd-degree or an even-degree function, and state the number of real zeroes. and then it gives me a graph Click here to see answer by stanbon(57377)

 Question 269857: This is more of a theoretical question: When the logarithm is written as log(a)y = x. The "a" is called the base, but what is the x and y called? (Similarly, in y=a + bsin (x-c) + d, the "a" would be the amplitude, the "b" would be the period, ect). Thank you very much!! Click here to see answer by jim_thompson5910(28595)

 Question 270252: Convert the following equations into exponential form: a. X = log54 b. 7 = log6Y c. X= log8Y d. 90 = log4Z Click here to see answer by Alan3354(30993)

 Question 270301: Solve for X, Y, and Z in the following systems of three equations using either substition or elimination methods: a. X 2Y Z = 22 X Y = 15 3X Y Z = 37 b. 10X Y Z = 603 8X 2Y Z = 603 20X - 10Y - 2Z = -6 c. 22X 5Y 7Z = 12 10X 3Y 2Z = 5 9X 2Y 12Z = 14 Click here to see answer by jim_thompson5910(28595)

 Question 270328: Cant seem to find my error while trying these questions???Please help a. x2 * x4 b. z8/z12 c. log4y + log4z d. log3y - log3z I have to simplify the following expressions?? Click here to see answer by ankor@dixie-net.com(15658)

 Question 270299: Solve for X and Y in the following problems using either substitution or elimination methods. a. X Y= 10 , 3X Y = 12 b. 2X 5Y = 19 , 3X 3Y = 15 c. 4X Y = 22 , 2X 3Y = 16 d. 12X Y = 174 , 8X - 2Y = 36 Click here to see answer by Edwin McCravy(8909)

 Question 270731: This life expectancy problem is really messing up when I try to solve it.... L(x)=79.25/(1+9.7135 * 10^24 * e^-.0304t) * = multiply ^ = to the power of (ex: 5^7 Five to the seventh power) Solve this equation when t=1970, and when t=1992. I keep getting a weird decimal for t=1970, and somewhere around four thousand for t=1992. Can I have some help? Thanks! Click here to see answer by Alan3354(30993)

 Question 270831: how do i graph these logarithms funtions on word excel? 1.f(X)=2x+2 that is 2 raise to the power of x+x 2x-2 2.f(X)=3x 3x+1 3x-1 they are all raise to the power of x 3.f(X)=(1/2)X (1/2)X +1 (1/2)X-1 Click here to see answer by solver91311(16897)

 Question 270977: Please help; I have tried for 2 pages of work-- What is the approximate solution of 3 to the x+1 power = 5 to the x power? Answer choices: a. 2.1507 b. 14l.4686 c. 0.4651 d. -0.4651 Thank you very much-Elizabeth Click here to see answer by vleith(2825)

 Question 271286: A city is growing at the rate of 0.7% annually. If there were 4,913,000 residents in the ciyt in 1972, find how many(to the nearest ten-thousand) are living in the city in 2000. Click here to see answer by checkley77(12569)

 Question 271541: you deposit \$200.00 in an that pays 7% interest compund yearly. Find the multiplier for the rate of exponential growth. Click here to see answer by stanbon(57377)

 Question 271486: what would be the smallest form of the x^16y^8/81 all in the fourth root? Click here to see answer by ankor@dixie-net.com(15658)

 Question 271531: how do i reduce this: 3log base 5 of 2-(5log base 5 of x+log base 5 of 48) ? email address: dianasalerno0ooo@yahoo.com please show all steps so i can understand how to solve this problem. thank you. Click here to see answer by ankor@dixie-net.com(15658)

 Question 271879: 1.solve for x log4 x^5=-1 2.solve for x in terms of k log9 x + log9(x+9)=k x=? find x if k = 10 Click here to see answer by dabanfield(803)

 Question 271884: hi pls solve for x 1. log5 x+log5 (x+4)= log5(7) 2. (9/8)log5 x = 7 3. 5log4 x = -1 4. 5^(6x-7)= 9^(10x-6) thank you sonia Click here to see answer by edjones(7569)

 Question 272291: The half-life of a certain radioatcive material is 85 days. An initial amount of the material has a mass of 801 kg. Write an exponential function that models the decay of this material remains after 10 days. Click here to see answer by ankor@dixie-net.com(15658)

 Question 272364: For which value of x is y=log x undefined? Click here to see answer by Alan3354(30993)

 Question 272494: The expression 1/2 logm - 3logn is equivalent to... Click here to see answer by stanbon(57377)

 Question 272924: I am trying to find an equation of the tangent line at the point indicated. f (x) = log3 (8x + x-8), x = 1 Click here to see answer by Edwin McCravy(8909)

 Question 273049: A local hamburger shop sold a combined total of 494 hamburgers and cheeseburgers on Friday. There were 56 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Friday? Click here to see answer by stanbon(57377)