Answer:
for
and for
Step-by-step explanation:
Remember that the CDF of an exponental random variable is given by
where is the parameter. In this case so, for this case
9
12 divided by 4=3 3X3=9
0.1 I believe would be your answer
i belive it is the 3rd on
sorry if wrong
x=30
because 3 times 30 equal 90 minus 5 is 85