Algebra 2

posted by .

Can someone please check these answers for me?? I'm pretty sure most of them are right, except for maybe the second T/F question...

1) T or F. The domain of y=ln x is equal to the range of y=e (superscript x).
True
2) T or F. ln(3x x y to the 3rd power) = (ln x 3) x (ln x) x (3 ln y).
True
3) Pure water has a pH of 7.0. Some acid rain has a pH of 4.5. Acid rain in how many times as acidic as pure water?
316 times more acidic
4) Suppose $3000 is invested at an annual interest rate of 4.8% compounded continously. Assume that there are no other deposits or withdrawls in this account.

What is the amount after 16 years? $6,466.35
How long would it take for the amount in the account to triple?
About 23 years

2) Ln(ab) = ln a + ln b


Ahh ok, so it's false then...thanks. :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Calculus

    What is the domain and range of the following function?
  2. Algebra-I'm still stuck

    The one-to-one function f is defined by f(x)=(4x-1)/(x+7). Find f^-1, the inverse of f. Then, give the domain and range of f^-1 using interval notation. f^-1(x)= Domain (f^-1)= Range (f^-1)= Any help is greatly appreciated. Algebra …
  3. Pre-calculus

    I want to make sure this is right. the inverse of f(x)=(-3x+2)/(2x-1) I got f^-1(x)=(x-2)/(2x-3). if its right how do i check the answer to see if it is right. also would the domain of f be D=all real numbers except 1/2. And I do not …
  4. algebra

    above the x axis a dot on the -2 line up to 2.5, and another dot on -3 line up to 4.5, that's on left side, then right side a dot on 2 line up 2.5, and another on line 3 up to 4.5. Not sure how to figure this is someone is willing …
  5. algebra

    Can someone check my answers please and if Im wrong please explain. 1) graph 4x^2+4y^2=64. what are the domain and range?
  6. Algebra 1-- Please, check my answers!

    1. What is ((-12x^6 + x)) / ((-4x^2))? A: 3x^4 - 1/4x 2. What is the greatest common factor of the terms of the polynomial 6x^3 - 18x^2 + 12x + 3?
  7. Math

    HELP PLEASE!!! I'm having some trouble with this question on my Maths hw. Any help is appreciated:) Identify the domain and range of the function. y=-0.25x^2 1. domain: (-oo, 0] range: (-oo, oo) 2. domain: (-oo, oo) range: (-oo, 0] …
  8. Pre calc quick question

    if a problem says f(x)=square root x^2-16; x less than or equal to -4. Find domain and range. to do this i set up the equation like x^2-16 less than or equal to -4. However by doing this I am runnning into complications findng domain …
  9. algerbra

    can someone check my work for this question?
  10. algerbra

    can someone check my work for this question?

More Similar Questions