After buying the cookies, they both lost money but still share the same balance because in the question it says they went to the store together and decided to buy some cookies, splitting they cost equally, Key word Equally. since they spent the same amount as one another they still share the same balance.
Answer:
9
Step-by-step explanation:
bcs 3 is the mode you do 3+3
21, cause if sarah had twice as mych she would have 42 and 42+21=63
Answer and explanation:
67% as it's +/- one standard deviation from the mean
