McAlister Company is operating at capacity and desires to add a new service to its rapidly expanding business. The service should be added as long as service revenues exceed: the sum of variable costs, fixed costs, and any related opportunity costs. the sum of variable costs and fixed costs. variable costs. the sum of variable costs and any related opportunity costs. fixed costs.

Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.