Answer: variable = x; coefficient = 12; constant = 18
Explanation:
Our task is to find a variable, a coefficient, and a constant in the expression 12x + 18.
So let's take a look at each of these.
Variable -> any letter that represents some number
Coefficient -> a number before the variable
Constant -> a number that isn't multiplied by any variable
In this case, the variable is x, the coefficient is 12, and the constant is 18.