What is the difference between similar and congruent figures?

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? )

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

I’m really confused and need to learn this