Question

"At the end of the first day, 7 weeds appear in your neighborhood park. Each day, the number of weeds increases by four times. How many weeds will be in the park at the end of 14 days?"
Can I get an explanation?:)

Answer 1

Do u have an idea about Geometric Series

Answer 2

Yeah. Its like a1=7 and n=14. But I don't know the rest of it :/

Answer 3

Each day, the number of weeds increases by four times means that the common ratio is 4

Answer 4

Now, find a14

Answer 5

can u?

Answer 6

...what would the equation be?

Answer 7

general equation for geometric series is:
an = a1 * r^(n-1)

Answer 8

So, find a14

Answer 9

So a14=7(4^13)?

Answer 10

Yep

Answer 11

so I got 469762048, but thats not an option.

Answer 12

35,456,231

626,349,395

71

392

Answer 13

wait a sec

Answer 14

OH! I got it, you add everything together:)

Answer 15

But thanks!:)

Answer 16

U mean we need to find s14