A factory emits 1 , 000 kilograms of a chemical the first month

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

A factory emits 1{,}000 kilograms of a chemical the first month. Each subsequent month it emits

r

times the amount emitted the previous month. For which value of

r

will the total amount emitted over all months be finite? (a)

-1.20

(b)

1.00

(c)

0.95

(d)

1.05