The perimeter of a stop sign with 8 sides of equal length is given by the expression 8n. what does the variable n means?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)