-Rick's Income Is $54 a Week and He Spends All

question 3

Multiple Choice

-Rick's income is $54 a week and he spends all of it on CDs and sandwiches. The price of a CD is $6 and the price of a sandwich is $3. The figure above illustrates Rick's preferences. What is Rick's best affordable combination of CDs and sandwiches?

• A) 3 CDs and 12 sandwiches a week
• B) 4 CDs and 10 sandwiches a week
• C) 6 CDs and 12 sandwiches a week
• D) 8 CD and 2 sandwiches a week

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Definitions:

Myelin

Fatty material produced by neuroglial cells; insulates axons and thus speeds conduction of action potentials.

Neuroglial Cells

Supportive cells in the nervous system that provide insulation, nutrients, and structural support for neurons, and participate in signal transmission.

Myelin

A fatty covering that insulates nerve fibers in the brain, spinal cord, and peripheral nerves, speeding the transmission of nerve impulses.

Action Potential

A rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane, a process allowing neurons to transmit signals.