The Museu Blau in Barcelona, Spain, is a natural science museum built in the shape of a triangular prism. The base of the building is an equilateral triangle 180180180 meters on each side. The height of the prism is 25\,\text{m}25m25, start text, m, end text.

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )