Someone me with this
your distance from lightning varies directly with the time it takes you to hear thunder. if you hear thunder 10
seconds after you see the lightning, you are about 2 miles from the lightning.

a. write a direct variation equation for the relationship between time and distance.

b. estimate how many seconds it would take for the thunder to travel a distance of 4 miles.

(co 3) the times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 9.4 minutes. a random sample of 25 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? no, the probability of this outcome at 0.035, would be considered usual, so there is no problem yes, the probability of this outcome at 0.035, would be considered unusual, so the display should be redone no the probability of this outcome at 0.359 would be considered usual, so there is no problem yes, the probability of this outcome at 0.965 would be considered unusual, so the display should be redone