melania has two jobs. during the day she works as an office clerk, and in the evening she works as a cashier. her office job pays her $13 per hour. her cashier job pays her $9.25 per hour. in one week, melania worked 38 hours. she earned a total of $434. let c represent the number of hours that melania works as an office clerk. which equation can be used to find how many hours melania worked in both jobs?
a. 13c + 9.25(c – 38) = 434
b. 13c + 9.25(38 – c) = 434
c. 13c + 9.25(434 – c) = 38
d. 9.25c + 13(38 – c) = 434