Three classmates are working with three different expressions. Each classmate substitutes in the value x=5 into their expression.

Question

Levi's expression is 3x+6.
Terri's expression is 3x^2 + 6.
Megan's expression is 3^x + 6
When substituting in the value x=5, Levi would get a result of ___, Terri would get a result of ___, and Megan would get a result of ___, ____- Expression produced the largest value.

Answer 1

Let's evaluate each expression by substituting $x=5$:

1. Levi's expression: $$3x+6=3(5)+6=15+6=21$$

2. Terri's expression: $$3x^2+6=3(5^2)+6=3(25)+6=75+6=81$$

3. Megan's expression: $$3^x+6=3^5+6=243+6=249$$

Now that we have the results:

• Levi would get a result of 21.
• Terri would get a result of 81.
• Megan would get a result of 249.

The expression that produced the largest value is Megan's expression with a result of 249.