A computer technician charges a fixed amount for a repair, plus an additional amount per hour. The equation below describes y, the total amount the technician charges, in dollars, for a repair that takes x hours. y=45x+75
What is the meaning of the y-intercept of the equation?
A. It means the technician charges a fixed amount of $45 for the repair
B. It means the technician charges a fixed amount of $75 for the repair.
C. It means the technician charges $45 per hour for the repair.
D. It means the technician charges $75 per hour for the repair.