Let b(t) be the number of unread books remaining on alex's bookshelf after reading consistently for t months.

b ( t ) = 75 - 5t

so, b ( 9 ) = .
options : 70 or 30 or 45 or 15

this means that ,
options :
* after 9 days
* after reading 9 books per month
* after reading 9 books
* after 9 months

the .
options :
* number of months that have passed is 70
* number of unread books remaining is 30
* number of unread books remaining is 45
* number of months that have passed is 15

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

all group life insurance is term insurance. actually it is annual renewable term and it is rated on the average age and claims experience of the entire group, which is called "experience rating." remember, this type of insurance has a 31-day grace period and is convertible to whole life upon leaving employment. a contributory group plan requires that both the employer and the employees pay part of the premium. at least 75% of those eligible must participate, so the group is sure to get most of the healthy employees as well as those that are sick.

step-by-step explanation:

step-by-step explanation: