Carlos begins his workout by stretching. Then he spends an equal amount of time on each workout machine. The equation y=8x+ 10 represents the total time, in minutes, of Carlos' workout if he uses x workout machines. Explain what the slope and y-intercept of the equation represent in this situation. A. Carlos spends 10 minutes on one machine and 8 minutes on another. OB. Carlos uses 8 workout machines for 10 minutes each. C. Carlos spends 8 minutes stretching and 10 minutes on each workout machine. OD. Carlos spends 10 minutes stretching and 8 minutes on each workout machine.