Question

An unknown or changeable quantity is a

O A. factor
O B. term
O C. coefficient
O D. variable

Answer 1

options D is correct

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An unknown or changeable quantity is a variable. We use variables when we don't know what a certain amount is, and they're usually referred to as "x," or "y."

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For example, if I had a problem where I needed apples, had $15, and knew that each apple was $1.50, I would use a variable to see how many apples I could buy (because right now that's an unknown number). I could solve it by writing 1.50x =15 to find my answer (which is x =10)

Answer 2

D. Variable

Explanation:

Variable is a symbol used to represents an unknown value. Variables may have only one value, or they may change with context/situation.

An unknown or changeable quantity is a "variable".

Example of variable:

x+3=10

X should be a variable.

So, the final answer is D. variable.