Circle City Is Circular with a Radius of 3 Miles

question 18

Short Answer

Circle City is circular with a radius of 3 miles.Right in the center is a circular park with radius one mile.No one lives in the park.Elsewhere the population density is 4500(5 - r)people per square mile, where r is the distance from the center in miles.What is the average population density of Circle City, to the nearest whole number?

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Definitions:

Cerebral Cortex

Part of the brain that regulates complex activities, such as speech and analytical thinking.

Cerebrum

The largest part of the brain, responsible for higher brain functions such as thought, action, and sensory processing.

Hippocampus

A major component of the brain involved in memory formation, spatial navigation, and emotional regulation.

Neurotransmitters

Chemical messengers that transmit signals across a chemical synapse from one neuron (nerve cell) to another 'target' neuron, muscle cell, or gland cell.