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

Question

Eleanor: 5x - 10
Parker: 5x^2 + 3
Nellie: 5^x - 40
When substituting in the value x = 4, what would each classmate get a result of?

Answer 1

Let's calculate the result for each classmate by substituting \( x = 4 \) into their respective expressions.

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: \[ 5^x - 40 \] Substituting \( x = 4 \): \[ 5^4 - 40 = 625 - 40 = 585 \]

Now, summarizing the results:

• Eleanor gets 10.
• Parker gets 83.
• Nellie gets 585.

Thus, the final results are:

• Eleanor: 10
• Parker: 83
• Nellie: 585

Answer 2

which person produced the largest value

Answer 3

From the calculations:

• Eleanor: 10
• Parker: 83
• Nellie: 585

Nellie produced the largest value, which is 585.