Answer:
It's B
Step-by-step explanation:
Because I randomly guessed and that was the answer.
$0.86. You either divide by 10 manually, or use the powers of 10.
Adam took 7 pieces so subtract it from the total.

He divided the rest to his 3 children

Each child recieved 2 candies.
Answer:
x-3
Step-by-step explanation:
x-3 x because we don't know the number of apples she has so you put a letter then -3 because 3 apples are given away
2.57 x 10^4 is 5 times larger than 2.57 x 10^-1