Question #8f1a7 Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer marfre Mar 30, 2017 #f(3) = 4# Explanation: #f(x) = (1+x^-1)/(x^-1) = (1+1/x)/(1/x) = (x/x + 1/x)/(1/x) = ((1+x)/x)/(1/x) # #= ((1+x)/x) * (x/1) = 1 + x# #f(3) = 1 + 3 = 4# Answer link Related questions How do you write the variable expression for: a quotient of 2 and the sum of a number and 3 ? What are variables? What are variable expressions? How do you write variable expressions? How do you evaluate variable expressions? How do you simplify the expression #3x-x+4#? How do you write a quotient of a number and 6 as an expression? How do you evaluate the expression #2x+1# for #x=1#? How do you write a product of a number and 2 as an expression? How do you write 5 less than 2 times a number as a variable expression? See all questions in Variable Expressions Impact of this question 972 views around the world You can reuse this answer Creative Commons License