College Algebra

I need to find the domain of f, the excluded values of f, the domain of (fg)(x); find (f+g)(-5), (f-g)(x), and (fg)(x) to the problem of:
Let f(x)=(7x+1)/(3x+2) and g(x)=6x+5.

  1. 👍 0
  2. 👎 0
  3. 👁 131
asked by Gloria
  1. excluded values for the domain of f: when 3x+2 = 0

    Otherwise the domain of f and g is all reals.

    f+/-g = (x+1)/(3x+2) +/- (6x+5), so same domain as f.

    fg = (7x+1)(6x+5)/(3x+2), so the domain is the same as that of f

    (f+g)(-5) = f(-5)+g(-5) = -34/-13 - 25

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra 2

    x2 + 2x – 10/ 3x – 15 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational

    asked by peaches on July 11, 2016
  2. Algebra ll

    X^2 - 25/2 AND 37/K^2-K-30 I really need help with these two problems.? •Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. •Find the domain for each of your two rational

    asked by Anonymous on October 2, 2014
  3. algebra 2

    16t^2 – 1/64 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set

    asked by peaches on July 11, 2016
  4. math 116

    What is the difference between domain and range? The domain of a function is the set of all values for the independent variable (in the following example, that's the x) for which the function is defined. That is, if you have a

    asked by sue on January 7, 2010
  5. Math

    f(x)=x-1 and g(x)=2x Perform the indicated and state the domain f(x)/g(x) If 2x is in the denominator, then x cannot be equal to zero, so that is excluded from the domain.

    asked by Anne on November 4, 2006
  6. college

    what values are excluded from the domain of the function f(x)= x-5/x?

    asked by kiley on March 15, 2010
  7. maths

    what is the largest domain of the following functions f(x)=3x-5 f(x)=square root of (x+4) f(x)= 2 over x-4 f(x)= sqaure root of (x2-9) f(x)= 2 over x(x+7) Hopefully you've solved these by now. I just noticed the question and see

    asked by jonathan on September 1, 2006
  8. Math

    The domain of g(x) is -1< x < 9 What is the domain of g(x - 4) I know the Domain: ?< x

    asked by Rai on October 10, 2014
  9. Small Group Communication

    Regulating participation, climate making, and maintaining mutual respect are all part of the ___________. task domain, interpersonal domain, procedural domain, work domain, or life skills domain. I believe this is the life skills

    asked by Jazmyne on December 29, 2011
  10. Algebra

    23. The ___ axis represents the independent variable. X? 21. Name the set(s) of numbers to which 1.68 belongs. a. rational numbers b. natural numbers, whole numbers, integers, rational numbers c. rational numbers, irrational

    asked by y912f on May 6, 2010

More Similar Questions