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4x - 8, 4x^2 - 8, 4^x - 8. x = 3, give me the answers for each of those

3 answers

Let's evaluate each expression given \( x = 3 \).

  1. For \( 4x - 8 \): \[ 4(3) - 8 = 12 - 8 = 4 \]

  2. For \( 4x^2 - 8 \): \[ 4(3^2) - 8 = 4(9) - 8 = 36 - 8 = 28 \]

  3. For \( 4^x - 8 \): \[ 4^3 - 8 = 64 - 8 = 56 \]

So, the answers are:

  • \( 4x - 8 = 4 \)
  • \( 4x^2 - 8 = 28 \)
  • \( 4^x - 8 = 56 \)
which expression produced the largest value

Let's summarize the results we calculated:

  1. \( 4x - 8 = 4 \)
  2. \( 4x^2 - 8 = 28 \)
  3. \( 4^x - 8 = 56 \)

Among these values, \( 4^x - 8 = 56 \) is the largest value.

Thus, the expression that produced the largest value is \( 4^x - 8 \).