A researcher studied the eyesight of people at different ages. She calculated a vision score for each person in the study and plotted the data on the graph below. 28 EYESIGHT STUDY 110 108 106 104 102 100 98 20 25 30 35 40 45 50 55 60 65 70 75 Age (years) The researcher used the line y = -01.x + 110 to model the data. When she substituted the value x = 65 into this equation, what did the result tell her? A the exact value for the vision score of a 65-year-old B the predicted value for the vision score of a 65-year-old (© the minimum possible value for the vision score of a 65-year-old the maximum possible value for the vision score of a 65-year-old Vision Score
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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