If an item is marked up 15% and the new cost is 155.25 what was the original price

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?