Identify the terms, coefficients, and constants in the expression.

g+12+9g

To identify the terms, coefficients, and constants in the expression g+12+9g, let's break it down:

Terms: Terms are separated by plus (+) or minus (-) signs. In this expression, we can identify three terms, which are:
1. g
2. 12
3. 9g

Coefficients: The coefficient is the number that multiplies a variable. In this expression, the coefficients are:
1. The coefficient for the term g is 1.
2. The coefficient for the term 12 is also 1.
3. The coefficient for the term 9g is 9.

Constants: Constants are terms without variables. In this expression, the constant is:
1. 12 is a constant because it is a number without any variable attached to it.

To summarize:
- Terms: g, 12, 9g
- Coefficients: 1, 1, 9
- Constants: 12

terms are separated by + and - signs

constants are just numbers
coefficients are constants used to multiply variables.

clearly you need to study this some more ...