Final answer:
When a equals 15, the expression 2(a - 5) + 2 evaluates to 22. This is found by substituting 15 into the expression, simplifying within the parentheses, and then performing the multiplication and addition.
Step-by-step explanation:
To evaluate the expression when a equals 15, we follow these steps:
- Substitute the value of a into the expression: 2(a - 5) + 2 becomes 2(15 - 5) + 2.
- Perform the operation inside the parentheses: 2(10) + 2.
- Multiply 2 by 10 to get 20, then add 2: 20 + 2.
- The final result is 22.
Therefore, when a equals 15, the value of the expression 2(a - 5) + 2 is 22.