You install 2 new light bulbs: a 60 watt bulb and a 100 watt bulb. Let X be the lifetime of the 60 watt bulb and Y the lifetime of the 100 watt bulb. The package says that the expected lifetime of the 60 watt bulb is an exponential random variable with mean 200 days while the lifetime of the 100 watt bulb is an exponential random variable with mean 100 days. a) Write down the PDFs of X and Y. b) Compute the CDFs of X and Y. c) If fx is the PDF of X and Fy is the CDF of Y then P(X

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

4+(2+x) can you me solve this problem

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?