Final answer:
The expression 'The sum of three times 'a'' can be translated into an algebraic expression as '3a'. The correct answer is a. 3×11+x.
Step-by-step explanation:
The expression 'The sum of three times 'a'' can be translated into an algebraic expression as '3a'. In this case, 'a' represents a number or variable. The multiplication of '3' and 'a' represents three times 'a'. Therefore, the correct answer is a. 3×11+x.