Question

Three classmates are working with three different expressions. Each classmate substitutes in the value x=3 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:
Whitney's expression is:
\[
4x - 8
\]
Substituting \( x = 3 \):
\[
4(3) - 8 = 12 - 8 = 4
\]
So, Whitney would get a result of **4**.

### Theo's Expression:
Theo's expression is:
\[
4x^2 - 8
\]
Substituting \( x = 3 \):
\[
4(3^2) - 8 = 4(9) - 8 = 36 - 8 = 28
\]
So, Theo would get a result of **28**.

### Erin's Expression:
Erin's expression is the same as Whitney's:
\[
4x - 8
\]
Substituting \( x = 3 \):
\[
4(3) - 8 = 12 - 8 = 4
\]
So, Erin would get a result of **4**.

### Summary of Results:
- Whitney: 4
- Theo: 28
- Erin: 4

### Conclusion:
With the calculated results, Theo's expression produced the largest value of **28**.