Explain how to write and evaluate an algebraic expression that represents the situation.
Adi studied for three more hours.
Evaluate when h = 8.

The variable is the number of hours Adi studied, the operation is addition, and the constant is 3. You can write the expression as h + 3 or 3 + h. To evaluate, substitute 8 in for the variable, h, and simplify. 8 plus 3 is 11. So Adi studied for 11 hours.

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