Chillingsworth Has a Neighbor, Shivers, Who Faces the Same

question 21

Multiple Choice

Chillingsworth has a neighbor, Shivers, who faces the same options for insulating his house as Chillingsworth.But Shivers has a larger house.Shivers's annual fuel bill for home heating is 1,200 dollars per year.Plan A will reduce his annual fuel bill by 15%, plan B will reduce it by 20%, and plan C will eliminate his need for heating fuel altogether.The plan A insulation job would cost Shivers 1,200 dollars, plan B would cost him 1,700 dollars, and plan C would cost him 13,200 dollars.If the interest rate is 10% and his house and the insulation job last forever, which plan is the best for Shivers?

• A)Plan A.
• B)Plan B.
• C)Plan C.
• D)Plans A and B are equally good.
• E)He is best off using none of the plans.

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Definitions:

Alpha Motor Neurons

Nerve cells that innervate muscle fibers, responsible for initiating muscle contraction.

Muscle Spindle

A sensory receptor located in muscles that senses changes in muscle length and contributes to the control of muscle contraction.

Afferent Neurons

Nerve cells that carry sensory information from the body's periphery to the central nervous system.

Stretch Reflex

A muscle contraction in response to stretching within the muscle, serving as a protective mechanism to prevent overstretching.