Math Problem Statement

Given g(x) = -(1/3)|2 - 7x| + 4, find the value of -3[g(2)] - 10.

Solution

To solve this problem, we will carefully follow the steps below:

Problem:

We are given: g(x)=1327x+4g(x) = -\frac{1}{3}|2 - 7x| + 4 and need to evaluate: 3[g(2)]10-3[g(2)] - 10


Step 1: Substitute x=2x = 2 into g(x)g(x)

The function is: g(x)=1327x+4g(x) = -\frac{1}{3}|2 - 7x| + 4 Substituting x=2x = 2: g(2)=1327(2)+4g(2) = -\frac{1}{3}|2 - 7(2)| + 4 Simplify 27(2)2 - 7(2): 214=122 - 14 = -12 Thus: 27(2)=12=12|2 - 7(2)| = |-12| = 12

Now substitute the absolute value: g(2)=13(12)+4g(2) = -\frac{1}{3}(12) + 4 Simplify: g(2)=4+4=0g(2) = -4 + 4 = 0


Step 2: Compute 3[g(2)]10-3[g(2)] - 10

Substitute g(2)=0g(2) = 0 into the given expression: 3[g(2)]10=3(0)10-3[g(2)] - 10 = -3(0) - 10 Simplify: 3(0)10=10-3(0) - 10 = -10


Final Answer:

10-10

Let me know if you have any additional questions or would like further clarification!


Here are 5 follow-up questions to expand your understanding:

  1. What happens to the absolute value function when the argument is negative?
  2. How does the constant 13-\frac{1}{3} affect the output of g(x)g(x)?
  3. Why does substituting x=2x = 2 simplify this function so easily?
  4. What are other methods to handle expressions with absolute values efficiently?
  5. How would the solution change if the argument 27x|2 - 7x| were positive instead of negative?

Tip: When dealing with absolute values, carefully resolve the inner expression first to determine its sign, as this step is critical to ensuring the rest of the calculation is correct.

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Math Problem Analysis

Mathematical Concepts

Absolute Value
Substitution
Simplification

Formulas

g(x) = -(1/3)|2 - 7x| + 4
Absolute value definition: |a| = a if a >= 0, |a| = -a if a < 0

Theorems

Properties of Absolute Value

Suitable Grade Level

Grades 9-11