I dont understand how to do this

Adriano loves anime and collects toys from his favorite series.each month he gains 4 toys. if adriano has 3 toys when he starts collecting, how many does he have after 4 months

If the measure of xyz is 81 what is the measure of yz

Chandler was a caretaker at the state zoo. he noticed that the number of animals adopted by the zoo increased at a constant rate every year since 2010. which of the following graphs shows the slowest rate at which the animals in the zoo were adopted?