Devin has a change jar that contain only half dollars and pennies. he has 93 coins which add up to a total of $23.96. how many of each type of coin does he have?

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? )