A Woman Drives Her Snowmobile 240 Miles at the Rate

question 10

Multiple Choice

A woman drives her snowmobile 240 miles at the rate of r mph. She could have gone the same distance in 2 hours less time if she had increased her speed by 20 mph. Find r .

• A) 27 mph
• B) 41 mph
• C) 44 mph
• D) 57 mph
• E) 40 mph

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Definitions:

Depolarization

The process of reducing the electrical charge difference across a cell membrane, crucial for the propagation of nerve impulses.

Sodium Ions

Positively charged particles of sodium, vital for maintaining the electrolyte balance and blood pressure in the body.

Axon

A long, slender projection of a nerve cell that typically conducts electrical impulses away from the neuron's cell body.

Dendrites

Branched extensions of a neuron that receive impulses from other neural cells and transmit them towards the cell body.