If the graph below represents Annabelle's distance from home (position) as she walked to school, which story might fit the graph? O None of the above O Annabelle left home on time and walked to school, but on the way to school, she realized she had left her math homework behind, so she walked back home to get it. When she left home again, she was almost late, so she ran really fast all the way to school. O Annabelle started off walking at her normal pace but then ran into a friend. Talking with the friend, she walked really slowly until they realized that they were about to be late. Then, they ran the rest of the way. O Annabelle left home early, so after a while, she stopped for a rest: She rested for about as long as she had been walking, then got up and ran to school.

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

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Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

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Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.