Riley is 3 years older than his sister. which of the following expressions shows the sum of their ages if s represents riley's sister's age?

2s + 3

Step-by-step explanation:

If we name s Riley's sister's age, the problem tells us that Riley is 3 years older than her so his age would be s + 3

Thus, the sum of their ages would be:

Riley's age + Riley's sister's age

(s + 3) + s = s + 3 + s = 2s + 3

Thus, the expression would be 2s + 3

konichiwa~! my name is zalgo and i am here to answer your anime-related question today. more than likely, kirishima would kill izuku, marry mino and kiss momo. all of this would be my opinion by the way. (and i am also a weeb lol)

i hope this you! : d

stay and stay proud! " - zalgo

(and do you think you can mark me as brainliest? i'd greatly appreciate it! arigato~! )