Question

Three classmates are working with three different expressions. Each classmate substitutes in the value x =
Eleanor Parker
Nellie
5x10 5x2 +35 - 40
4 into their expression.
When substituting in the value x = 4, Eleanor would get a result of
Parker would get a result of
I
would get a result of
expression produced the largest value.
:: 10
:: Parker's
:: Nellie's
:: 585
:: Eleanor's
:: 30
:: 20
:: 43
:: 83
:: 400
ין
and Nellie

Answer 1

Let's analyze the expressions provided for Eleanor, Nellie, and Parker by substituting \( x = 4 \) into each expression and calculating the results.

1. **Eleanor's Expression**: \( 5x \)
Substituting \( x = 4 \):
\[
5(4) = 20
\]

2. **Nellie's Expression**: \( 5x^2 + 35 - 40 \)
Substituting \( x = 4 \):
\[
5(4^2) + 35 - 40 = 5(16) + 35 - 40 = 80 + 35 - 40 = 75
\]

3. **Parker's Expression**: \( 4x \)
Substituting \( x = 4 \):
\[
4(4) = 16
\]

Now let's compare the results from their expressions:

- Eleanor's result: \( 20 \)
- Nellie's result: \( 75 \)
- Parker's result: \( 16 \)

The largest value among these results is Nellie's, which is \( 75 \).

So the conclusion is:
- **Nellie's expression produced the largest value**.