Math Problem Statement

If f ( x )

7 x − 5 f ( x )

7 x

5 , then f ( x + 1 )

Solution

Given the function f(x)=7x5f(x) = 7x - 5, we want to find f(x+1)f(x+1).

To do this, substitute x+1x+1 into the function in place of xx:

f(x+1)=7(x+1)5f(x+1) = 7(x+1) - 5

Now simplify:

f(x+1)=7x+75f(x+1) = 7x + 7 - 5 f(x+1)=7x+2f(x+1) = 7x + 2

So, f(x+1)=7x+2f(x+1) = 7x + 2.

Would you like a more detailed explanation, or do you have any other questions?

Here are 5 related questions for further exploration:

  1. What is the value of f(2)f(2) for the given function?
  2. How does f(x+2)f(x+2) compare to f(x)f(x)?
  3. Can you find the inverse of f(x)=7x5f(x) = 7x - 5?
  4. What is the derivative of f(x)=7x5f(x) = 7x - 5?
  5. If g(x)=x2g(x) = x^2, what is (fg)(x)(f \circ g)(x)?

Tip: When substituting a variable into a function, be sure to replace all instances of the original variable with the new expression.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Functions
Function Substitution

Formulas

f(x) = 7x - 5

Theorems

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Suitable Grade Level

Grades 8-10