A Population Model The resident population of the United States in 2014 was 317 million people and was growing at a rate of 0.7% per year. Assuming that this growth rate continues, the model P(t) = 3171(.007)t-2014 represents the population P (in millions of people) in year t. (a) According to this model, when will the population of the United States be 400 million people? (b) According to this model, when will the population of the United States be 435 million people?
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.
A Population Model The resident population of the United
States in 2014 was 317 million people and was growing at
a rate of 0.7% per year. Assuming that this growth rate
continues, the model P(t) = 3171(.007)t-2014
represents
the population P (in millions of people) in year t.
(a) According to this model, when will the population of the
United States be 400 million people?
(b) According to this model, when will the population of the
United States be 435 million people?
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