Robin used 1/4 of a pound of butter to make a cake. before she started, she had 7/8 of a pound of butter. how much butter did robin have when she was done baking? give your answer as a fraction of a pound.

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

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.)

Which rule describes the composition of transformations that maps △abc to △a”b”c