Pls help for my class

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4