Question

FIRST OPTIONS ARE 45307015SECOND OPTIONS AREAFTER 9 DAYSAFTER 9 MONTHS AFTER READING 9 BOOKS AFTER READING 9 BOOKS PER MONTH THIRD OPTIONS ARE NUMBER OF UNREAD BOOKS REMAINING IS 30NUMBER OF MONTHS THAT HAVE PASSED IN 70NUMBER OF MONTHS THAT HAVE PASSED IN 15NUMBER OF UNREAD BOOOKS REMAINING IS 45

Answer 1

Answer:

So, b(9) = 30. This means that after 9 months, the number of unread books remaining is 30.

Explanation:

b(t) is the number of unread books remaining after t months.

Since b(t) = 75 - 5t, we can find b(9), replacing t by 9, so

b(t) = 75 - 5t

b(9) = 75 - 5(9)

b(9) = 75 - 45

b(9) = 30

It means that after 9 months, the number of unread books is 30.

So, the answers are:

b(9) = 30. This means that after 9 months, the number of unread books remaining is 30.