Suppose that the pairwise comparison method is used to determine the winner in an election. If there are 3 candidates, how many comparisons must be made?

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Which graph represents the parent function of y=(x+2)(x-2)

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years