Answer:
R= 1/2S + 15
Explanation:
R=Rhonda's earrings
S= Sharon's earrings
Marilyn has 1/2 as many earrings as Sharon, so in order to find how many earrings Marilyn has, you must divide Sharon's amount by 2. Hence the 1/2S.
Rhonda has 15 more earrings than Marilyn, so if you take the quantity of Marilyn's earrings (1/2S) and add 15 to it, you should get your answer.