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b). 7 is the correct answer

For c = 7, the expression 8x + cy is completely factored.

The correct answer is an option (b)

What is an expression?

"It is a mathematical statement with a minimum two numbers or variables and at least one mathematical operation. "

For given example,

We have been given an expression 8x + cy

We need to find the value of c that would make the given expression completely factored.

For c = 2,

⇒ 8x + cy

= 8x + 2y

= 2(4x + y)                         ..............(Factor out common term)

This means c = 2 is not the required value.

For c = 12,

⇒ 8x + cy

= 8x + 12y

= 4(2x + 3y)                         ..............(Factor out common term)

This means c = 12 is not the required value.

For c = 16,

⇒ 8x + cy

= 8x + 16y

= 8(x + 2y)                         ..............(Factor out common term)

This means c = 16 is not the required value.

For c = 7,

⇒ 8x + cy

= 8x + 7y, which is completely factored

This means c = 7 is the required value of c.

Therefore, for c = 7, the expression 8x + cy is completely factored.

The correct answer is an option (b)

Learn more about expression here:

https://brainly.com/question/13947055

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