Solve Problems Using Systems of Linear Equations
-A Rectangular Lot $\$ 21$

question 46

Multiple Choice

Solve Problems Using Systems of Linear Equations
-A rectangular lot whose perimeter is 400 feet is fenced along three sides. An expensive fencing along the lot's length costs $\$ 21$ per foot, and an inexpensive fencing along the two side widths costs only $\$ 10$ per foot. The total cost of the fencing along the three sides comes to $\$ 4140$ . What are the lot's dimensions?

• A) Length \(140 \mathrm { ft }\); Width \(60 \mathrm { ft }\)
• B) Length \(143 \mathrm { ft }\); Width \(57 \mathrm { ft }\)
• C) Length \(135 \mathrm { ft }\); Width \(65 \mathrm { ft }\)
• D) Length \(280 \mathrm { ft }\); Width \(120 \mathrm { ft }\)

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Definitions:

Brain

The complex central organ of the nervous system, enclosed within the skull, functioning as the primary receiver, organizer, and distributor of information for the body.

Myelin

A fatty substance that surrounds and insulates the axons of many neurons, enhancing the speed and efficiency of electrical signal transmission in the nervous system.

Insulates

Refers to the process or material used to prevent the transfer of heat, electricity, or sound from one area to another.

Neural Message

The transmission of information through neurons, involving electrical impulses and chemical signals.