How much money in interest did you earn if you had $450 in your account and got %2 interest on it

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.

Ithink i know it but i want to be sure so can you me out ?

Which of the following will form the composite function?