To solve, you would first find how much the skirt is 30% off. To do that, you would take $42.50 x 0.30=12.75. You would then subtract $42.50-12.75=29.75. After, take 29.75 x 0.052=1.547. Finally, take 1.547+29.75=31.297. Round and your answer should be $31.30. Question about moving decimal places? Always move to the left 2. Hope that helps!