Write an algebraic expression to model the unknown number situation. the sum of a number and one-third

A 1-column table with 5 rows. Column 1 is labeled Addition Words with entries add, increase by, more than, sum, total.

Which statements are true? Select all that apply.
You can replace "a number" with a variable to represent an unknown value.
You can replace "sum" with an addition sign.
You can replace "sum" with an multiplication sign.
You can replace "one-third" with One-third.
The correct algebraic expression is One-third n.

1 2 5/ A.B.D

Explanation:

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we have to select the terms that are associated with communication between neurons.

synapse is the gap between two neurons that is there to transmit the signal.

from one neuron to other neuron the signals transmit through neurotransmitter which is a chemical and finally after reaching it becomes the electrical signal

therefore, option 4th is correct that is: synapse,electrical signals and neurotransmitter.

a negative statement is more likely to be the correct answer (apex)