Three classmates are working with three different expressions. Each classmate substitutes in the value x=3

Question

into their expression.

Whitney Theo Erin
4x−8
4x2−8
4x−8
When substituting in the value x=3
, Whitney would get a result of
, Theo would get a result of
, and Erin would get a result of
.



expression produced the largest value.​​​​​​

Answer 1

Let’s evaluate each expression by substituting \( x = 3 \).

Whitney's Expression: \[ 4x - 8 \] Substituting \( x = 3 \): \[ 4(3) - 8 = 12 - 8 = 4 \]

Theo's Expression: \[ 4x^2 - 8 \] Substituting \( x = 3 \): \[ 4(3^2) - 8 = 4(9) - 8 = 36 - 8 = 28 \]

Erin's Expression: \[ 4x - 8 \] Substituting \( x = 3 \): \[ 4(3) - 8 = 12 - 8 = 4 \]

Now, we summarize the results for each classmate:

• Whitney would get a result of 4.
• Theo would get a result of 28.
• Erin would get a result of 4.

Comparing the results:

• Whitney: 4
• Theo: 28
• Erin: 4

The expression produced the largest value is Theo's expression with a result of 28.