Plz
the table below represents the distance of a train from its destination as a function of time:
time (hours) x distance (miles) y
0 665
1 570
2 475
3 380
4 285
part a: what is the y-intercept of the function, and what does this tell you about the train?
part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 4 hours, and tell what the average rate represents.
part c: what would be the domain of the function if the train continued to travel at this rate until it reached its destination?

Fran would like to estimate the mean amount of time it takes people in her town to travel to work. the town's population is 150,000 and about 90,000 of those are working adults. which statements are true? select each correct answer. there is no way to infer the value of the mean. she must collect data for all 90,000 working adults and calculate the mean. a larger sample of working adults will provide a better estimate of the true mean than a smaller sample. the population of working adults is too large for using a sample to estimate the mean of the entire group. if she takes a random sample of the population of working adults in her town, the mean for that group is likely close to the mean for the entire group.

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Which function has the domain x> -11