A rectangular aluminum bar with a width of 3.8 centimeters, thickness of 1.3 centimeters, and length of 61 centimeters has a mass of 813.6 grams. Iron is about 3 times as dense as aluminum. If an iron bar has the same mass as the aluminum bar, what is the approximate volume of the iron bar?

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? )