Year No Expenditures ($ billions) 2018 191.0 2020 198.9 2022 214.5 2024 228.4 (Saurre: Enermy Information Administrationl
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.
Oil imports Crude oil and petroleum products are
imported continuously by the United States. The
table shows the billions of dollars of net expenditures
for the imports of these products for several years.
a. Write a linear
x equal to the number of years after 2015 and y
equal to the billions of dollars of expenditures.
Report the model with two decimal places.
b. Is the model an exact fit for the data?
c. What does the model predict the billions of dollars of net expenditures will be for the imports in
2023?
d. When does the model predict the billions of dollars of net expenditures for the imports will be
208.2 $billion?
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