Question

You use circles to represent x and squares to represent 1. You shade the shapes to represent negative values.

Which model represents 3(x−4)
?

(1 point)
Responses

3 rows of 1 shaded circle and 4 shaded squares
Image with description 3 rows of 1 shaded circle and 4 shaded squares

3 rows of 1 unshaded circle and 4 unshaded squares
Image with description 3 rows of 1 unshaded circle and 4 unshaded squares

3 unshaded circles and 4 shaded squares
Image with description 3 unshaded circles and 4 shaded squares

3 rows of 1 unshaded circle and 4 shaded squares
Image with description 3 rows of 1 unshaded circle and 4 shaded squares

Answer 1

"3 rows of 1 unshaded circle and 4 shaded squares."

Reason: each row models (x − 4): an unshaded circle = +x and four shaded squares = −1 each. Three rows give 3x − 12.