Dora gets paid an hourly wage, which increases if she works over 40 hours per week. she worked a total of h hours last week, and the number of dollars she got paid was 30 ×40+45 ×(h-40). what does 45 represent in this situation? a. the number of dollars per hour she got paid for all hours under 40 b. the number of dollars per hour she got paid for all hours over 40 c. the number of hours she worked over 40 d. the total number of hours she worked