Which of these best represents the function shown in the table?

x f(x)
0 2
1 8
2 32
3 128
4 512

(1 point)
Responses

f(x)=2(4x)
f of x is equal to 2 times open paren 4 to the x th power close paren

f(x)=x+2
f of x is equal to x plus 2

f(x)=6x+2
f of x is equal to 6 x plus 2

f(x)=x5

1 answer

To find the function that best represents the data in the table, let’s observe the pattern in the values of \( f(x) \):

  • When \( x = 0 \), \( f(0) = 2 \)
  • When \( x = 1 \), \( f(1) = 8 \)
  • When \( x = 2 \), \( f(2) = 32 \)
  • When \( x = 3 \), \( f(3) = 128 \)
  • When \( x = 4 \), \( f(4) = 512 \)

Now let’s look for a function that fits this pattern:

First, notice how the function values seem to scale up quickly:

  • \( 2 \) can be written as \( 2 \times 4^0 \)
  • \( 8 \) is \( 2 \times 4^1 \)
  • \( 32 \) is \( 2 \times 4^2 \)
  • \( 128 \) is \( 2 \times 4^3 \)
  • \( 512 \) is \( 2 \times 4^4 \)

This leads us to conjecture that the function could be written as \( f(x) = 2 \times 4^x \).

Now looking at the given options, the only one that matches our finding is:

f(x) = 2(4^x)

Thus, the correct response is:

f of x is equal to 2 times open paren 4 to the x th power close paren.