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Amy knows from reading her syllabus in intermediate algebra that the average of her chapter tests accounts for 80% (0.8) of her overall course grade. She also knows that the final exam counts as 20% (0.2) of her grade.
a. Suppose that the average of Amy's chapter tests is 97%. Determine the range of grades that she would need on her final exam to get an "A" in the class. (Assume that a grade of "A" is obtained if Amy's overall average is 90% or better.)
b. Determine the range of grades that Amy would need on her final exam to get a "B" in the class. (Assume that a grade of "B" is obtained if Amy's overall average is at least 80% but less than 90%.)
Dendrite
Dendrites are branched extensions of a neuron that receive signals from other neurons and transmit them towards the cell body.
Node of Ranvier
Gaps in the myelin sheath along the axon of neurons where action potentials are generated.
Neurotransmitters
Chemical substances that transmit signals across a synapse from one neuron to another neuron or cell in the body.
Synaptic Vesicle
A small, spherical structure found within nerve cell endings, responsible for storing neurotransmitters that are released during synaptic transmission.
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