Amanufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours. to test this claim, a reputable testing firm took a random sample of 100 bulbs and life tested them. the testing firm found the average life of the sample to be 4500 hours with a sample standard deviation, s = 400 hours. the value of the test statistic for this problem isa 1.25b -1.25c 12.5d -12.5e none of the values listed

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)