Answer:
w^2+6w-112
Step-by-step explanation:
combine like terms
w^2 and 6w are not like terms

a. 9:00 AM is the 60 minute mark:

b. 8:15 and 8:30 AM are the 15 and 30 minute marks, respectively. The probability of arriving at some point between them is

c. The probability of arriving on any given day before 8:40 AM (the 40 minute mark) is

The probability of doing so for at least 2 of 5 days is

i.e. you're virtually guaranteed to arrive within the first 40 minutes at least twice.
d. Integrate the PDF to obtain the CDF:

Then the desired probability is

Answer:
42.5
Step-by-step explanation:
its easy not even needed to be explained!!
Answer:
im lost good luck
Step-by-step explanation: