Acompany is paying a local radio station to run its commercials. the cost for running commercials is a one-time campaign fee and also a per-second fee for the air time of each commercial. the cost can be modeled by the equation y = 250 + 100x, where x is seconds.

what is the slope, and what does it represent?

250; it represents the per-second fee of air time
250; it represents the one-time campaign fee
100; it represents the one-time campaign fee
100; it represents the per-second fee of air time