When you’re writing expressions to represent real-world situations, remember that expressions can have more than one operation. That’s when things can get a little tricky. Some operations are commutative. That means changing the order of the terms will not change the answer. Addition and multiplication are commutative. When adding the terms 4 and 3n, we can say 4 + 3n or 3n + 4.
Which of these two expressions represent the phrase “five plus two times a number”?
A
5n + 2n and 2n + 5n
B
5 + 2n and 2 + 5n
C
2n + 5 and 2n - 5
D
5 + 2n and 2n + 5
3 answers
The expression that represents the phrase "five plus two times a number" is D) 5 + 2n and 2n + 5.
you can only pick one
In that case, the correct answer would be D) 5 + 2n and 2n + 5.
1 answer