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yan [13]
4 years ago
10

Riley is 3 years older than his sister. The sum of their ages if s represents Riley's sister's age is shown as

Biology
1 answer:
FromTheMoon [43]4 years ago
5 0
The algebraic expression that represents this is D. 2s + 3.

Riley's sister - s
Riley - s+3
Total - s+s+3 = 2s+3
Total - 2s + 3.
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