Math Problem Statement

Complete the table of values for f(x) = 4^x and g(x) = x + 8. Both f(x) and g(x) grow as x gets larger and larger. Which function eventually exceeds the other?

Solution

Let's analyze and complete the table for the two functions given:

  • f(x)=4xf(x) = 4^x
  • g(x)=x+8g(x) = x + 8

The table values need to be calculated for x=1,2,3,4x = 1, 2, 3, 4.

For f(x)=4xf(x) = 4^x:

  1. f(1)=41=4f(1) = 4^1 = 4
  2. f(2)=42=16f(2) = 4^2 = 16
  3. f(3)=43=64f(3) = 4^3 = 64
  4. f(4)=44=256f(4) = 4^4 = 256

For g(x)=x+8g(x) = x + 8:

  1. g(1)=1+8=9g(1) = 1 + 8 = 9
  2. g(2)=2+8=10g(2) = 2 + 8 = 10
  3. g(3)=3+8=11g(3) = 3 + 8 = 11
  4. g(4)=4+8=12g(4) = 4 + 8 = 12

Completed Table:

xf(x)=4xf(x) = 4^xg(x)=x+8g(x) = x + 8
149
21610
36411
425612

Which function eventually exceeds the other?

While g(x)g(x) initially grows faster than f(x)f(x), after x=2x = 2, f(x)f(x) starts to exceed g(x)g(x). For large values of xx, f(x)=4xf(x) = 4^x will grow exponentially faster than the linear function g(x)=x+8g(x) = x + 8.

Let me know if you'd like further clarification or details!


Five follow-up questions:

  1. What is the general difference between exponential and linear functions?
  2. How would the table change if we evaluated x=0x = 0 for both functions?
  3. What happens to f(x)f(x) and g(x)g(x) as xx becomes very large?
  4. Can you compare the rate of growth of 4x4^x to that of other exponential functions, like 2x2^x?
  5. What is the significance of the intersection point between the two functions?

Tip: Exponential functions like 4x4^x grow much faster than linear functions like x+8x + 8 after a certain point.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Exponential Functions
Linear Functions
Function Tables
Growth Comparison

Formulas

f(x) = 4^x
g(x) = x + 8

Theorems

Exponential Growth

Suitable Grade Level

Grades 7-9