Mrs. Thompson, a member of Lee High School's Parent Teacher Association, wants to determine the average amount of money that high school students across the nation spend each day on lunch. Which method would be most likely to provide the most accurate answer? 1. Find the amount spent on school lunches by the federal government in 2009, and then divide by the number of students enrolled in high school in 2009. 2. Collect a sample group of high school students from different parts of the nation using social media, and calculate the average cost of their school lunches
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.
Speed, Time, and Distance
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.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
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.
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