Find the slope of the line through (6,2) and(4 -2)

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

Me. i can't figure out this question. give an explanation too. .