HELP with characteristics of functions?

Question

Steve earns $24.39/hr operating an industrial plasma torch at a rail-car manufacturing

plant. He receives $0.58/hr more for working the night shift, as well as $0.39/hr more for

working weekends.

a. Write a function that describes Steve’s daily earning under regular pay. 

b. What function represents his earnings for the night shift on Sunday? 

c. How much does Steve earn for working 11 hours on Sunday night, if he earns time

and a half on that day’s rate for more than 8 hours of work?