In word problems, we can take what they say to create an expression of it.
"The product of a number, x, and five is half the sum of the number and two."
We can write this as
5x = (x + 2) / 2
The correct answer would be A I assume, but some pieces are missing.
If A is 5x = 1/2x + 2, then that is the correct answer.
