Sylvia draws a scale model of her room in feet on a coordinate grid. The corners are located at (-8,4), (3, 4), (3, -6), and (-8, -6). She wants to apply a border all the way around the top of the walls. what is the length in feet of the border Sylvia needs?I'm learning perimeter

"The product" immediately suggests multiplication; we're going to be multiplying two quantities together, "3" and "a number minus 7"

"A number" just describes an unknown value, so we'll pick the letter n to be that unknown in our expression. "A number minus 7" then could be written as n - 7.

We can now write the product of 3 and (n - 7) as the expression

3 × (n - 7)

Final answer:

The expression that represents 'the product of 3 and the quantity of a number minus 7' can be written in algebra as 3*(x - 7). Here, x is our variable and can be any number.

Explanation:

The student is asking for an expression that represents 'the product of 3 and the quantity of a number minus 7'. In terms of algebra, this can be expressed in the following way: assuming the 'number' is represented by a variable, like x, we can write it as 3*(x - 7).

This mathematical expression says that we first subtract 7 from our number, x, and then multiply the result by 3.

For example: if x is 10, we would first calculate 10 - 7, which is 3, and then multiply that result by 3, yielding a final product of 9.

Learn more about Algebra here:

brainly.com/question/32436021

#SPJ3

Answer:4/21

Step-by-step explanation:divide 6 by both sides