World population' is approximately P = 7.32(1.0109)', with P in billions and t in years since 2015. (a) What is the yearly percent rate of growth of the world population? The percent rate of growth is % per year. (b) What was the world population in 2015? The world population in 2015 was billion people. What does this model predict for the world population in 2028? Round your answer to two decimal places. The predicted world population in the year 2028 is billion people. (c) Use part (b) to find the average rate of change of the world population between 2015 and 2028. Round your answer to the nearest integer. The average rate of change of the world population between 2015 and 2028 is about | people per year. million
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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