gia is thinking of a number which she calls n. She adds 4 to the number and then doubles the sum. Write an expression to represent Gia's thinking.

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? )