The volume of oxygen consumed (in liters per minute) while a person is at rest and while a person is exercising (running on a treadmill) were both measured for 50 subjects. The goal is to determine if the volume of oxygen consumed during aerobic exercise can be estimated from the amount consumed at rest. The results are plotted below. 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Volume Consumed at Rest In this study, the explanatory variable is: the instrument used to measure the volume of oxygen consumed. the volume of oxygen consumed at rest. the volume of oxygen consumed while running. either variable-it doesn’t matter which is considered the response. O O O Volume Consumed While Running

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.

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 …

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

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 experime…