Estimation would give you an answer close to the actual answer so you can see if your answer is reasonable depending on how close the estimate is
125 cubes since the little cubes are all 1 volume you can just say the normal volume.
Answer: (D) 1.99x + 1.89y = 9.57
Step-by-step explanation: The reason is because equation option D states that for every notepad and pencil, x and y he bought, the total of his bill would equal $9.57.
