Answer:
B .coz the sign is telling us the way it moves
3r = 10 + 5s , <span>r = 10
plug in the value of "r" into the equation:
3(10) = 10 +5s
30 = 10 + 5s
subtract 10 from both sides:
20 = 5s
divide both sides by 5:
4 = s
s = 4</span>
Start by plugging in all your answer choices and see which ones make the solution true
The first one might be b or c
