There is no sum for this geometric series. it diverges rather than converges due to the absolute value of the common ratio (r), which is -3, being 3. for a geometric series to have a sum (to converge), the absolute value of r must be less than 1.
(you find r by dividing a2/a1, a3/a2, etc.)
hope this helps
She probably does that for exercise. So, she gets to the level that she wants, and she gets more exercise so she gets there faster.
Answer:
3 weeks
Step-by-step explanation:
create a proportion of grass growth rate over time:
(
÷1) = (
÷x )
=
cross-multiply:
28x = 84
x = 84/28 which is 3
