THE LIFE SPAN OF THE SPOTTED FUZZY IS 3 YEARS.

B A E

Year 1babies

Year 2adults

Year 3elder

THE LIFE SPAN OF THE SPOTTED FUZZY IS 3 YEARS.

B A E

Year 1babies

Year 2adults

Year 3elder

62.5% of babiessurvive toadulthood

50% of adultssurvive toOld age

The number of babies in year n+1 ( Bn+1 ) is a functionOf the number of adults and the number of elders in the Year n :

Bn+1 = 1.5 An + .2 En

Every year, each adult fuzzy couple has 3 baby fuzzies

And 1 out of every 5 elder couples has 2 baby fuzzies

THE LIFE SPAN OF THE SPOTTED FUZZY IS 3 YEARS.

B A E

Year 1babies

Year 2adults

Year 3elder

.625 .50

1.5

.20

B A E

Year 1babies

Year 2adults

Year 3elder

.625 .50

1.5

.20

Bn+1 = 0 Bn + 1.5 An + .2 En

An+1 = .625 Bn + 0 An + 0 En

En+1 = 0 Bn + .5 An + 0 En

B A E

Year 1babies

Year 2adults

Year 3elder

.625 .50

1.5

.20

Bn+1 = 0 Bn + 1.5 An + .2 En

An+1 = .625 Bn + 0 An + 0 En

En+1 = 0 Bn + .5 An + 0 En

n

n

n

E

A

B

05.0

00625.

2.5.10=

05.0

00625.

2.5.10

1

1

1

n

n

n

n

n

n

E

A

B

E

A

B

Suppose there are 650 babies, 500 adults and 200 elders this year.

How many babies, adults and elders will there be next year?How many babies, adults and elders will there be in 8 years?

How many babies, adults and elders were there last year?