Three classmates are working with three different expressions. Each classmate substitutes in the value x=4

Question

into their expression.

Eleanor Parker Nellie
5x−10
5x2+3
5x−40
When substituting in the value x=4
, Eleanor would get a result of Response area, Parker would get a result of Response area, and Nelliewould get a result of Response area



Response areaexpression produced the largest value.​​​​​​

Answer 1

Let's evaluate the expressions for each classmate when substituting \( x = 4 \).

Eleanor's expression:
\[ 5x - 10 \]
Substituting \( x = 4 \):
\[ 5(4) - 10 = 20 - 10 = 10 \]

Parker's expression:
\[ 5x^2 + 3 \]
Substituting \( x = 4 \):
\[ 5(4^2) + 3 = 5(16) + 3 = 80 + 3 = 83 \]

Nellie's expression:
\[ 5x - 40 \]
Substituting \( x = 4 \):
\[ 5(4) - 40 = 20 - 40 = -20 \]

Now we summarize the results:

• Eleanor: 10
• Parker: 83
• Nellie: -20

Comparison of results:

• Eleanor: 10
• Parker: 83
• Nellie: -20

The expression produced the largest value was Parker's expression, yielding a result of 83.

Final summary:

• Eleanor would get a result of 10
• Parker would get a result of 83
• Nellie would get a result of -20
• Parker's expression produced the largest value.