The metal bar shown is an alloy of silver and other metals. A photo of a metal bar is shown. The caption says seven and a half ounces. If 9% of the bar’s weight is iron, how much does the iron weigh?

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Which of the following represents the range of the graph of f(x) below

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?