Final answer:
To find the length of each placemat, divide the area of the placemat by its width using polynomial division.
Step-by-step explanation:
To find the length of each placemat, we need to divide the area of the placemat by its width. The area is represented by the expression 45x - 71x - 150, and the width is represented by the expression 5x + 6.
To divide the area by the width, we need to perform polynomial division. Using long division, we divide the area by the width to find the quotient, which represents the length of each placemat.
Example:
45x - 71x - 150
──────────────────────
5x + 6
By performing the polynomial division, we find the quotient, which represents the length of each placemat.