A smoke detector system uses two devices, A and B. If smoke is present the probability that it will be detected by device A is 0.95; by device B is 0.98; and by both devices, 0.94. If smoke is present, find the probability that the smoke will be detected by device A or device B or both devices.

Question was not very clear if there are specific answer choices tell me and i'll try to you more. hope this though2 laps is 1 min. we know that for each min she does two times the amount of laps. for 12 laps we can do 12/2 which does give us 12 laps in 6 mins not 16 mins.

Gravity, from the center of mass of the box, extending downward normal force, from the floor under the box, extending upward, equal to gravity push force, acting at a point on the box, extending in the direction of motion friction, acting at any point on the box directly opposite the push, extending directly opposite to the motion