Steel Has Been Playing a Decreasing Role in the Manufacture

question 11

Multiple Choice

Steel has been playing a decreasing role in the manufacture of beverage cans in the United States.The use of bimetallic cans has been dwindling, whereas the use of all-aluminum cans has been growing steadily.The accompanying table gives the production (in billions) of all-aluminum cans over the period from 1975 through 1989: Find an equation of the least-squares line for these data.(Let x = 1 represent the year 1975.) Please round the coefficients in your equation to three decimal places.Use the result to estimate the number of cans produced in 1993, assuming the trend continued.

• A)y = 4.834x + 11.857; 103.666 billion cans
• B)y = 4.842x + 11.842; 103.863 billion cans
• C)y = 4.842x + 11.842; 103.840 billion cans
• D)y = 4.834x + 11.857; 103.703 billion cans

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Definitions:

Brain Development

The process of growth and maturation of the brain, which includes changes in structure, function, and complexity over time.

External Stimuli

External forces or conditions that influence behavior, perception, or physiological responses.

Formal Operations

The final stage in Piaget's theory of cognitive development, marked by the ability to think abstractly and reason hypothetically.

Abstract Thinking

The cognitive ability to understand concepts that are not grounded in physical reality, and to use general principles to solve problems and generate new ideas.