ElectricPavlov

Volume of a sphere = 4/3  pi r³

     4/3 pi (  2³  + 3³  + 6³)  =  334.67 pi  in³

https://web2.0calc.com/questions/pls-help_27234

original number   1000

    increase 50% per year

          1000 (1.5)  

          decrease 20% per year

              1000 (1.5)(.8)

         #geese    = 1000 (1.2)ⁿ       where n is year

After year one    there is 1200     after year 2   there is 1440  etc

When n = 7     # geese = 3583

Please proofread your question..... it presently makes no sense   

Plan1    10000 ( 1 + .10/4)²⁰ =  balance at 5 yrs = 16386.16      pay half leaving half 8193.08

                       at the end of 10 years    8193.08 (1+.10/4)²⁰ = remaining balance = 13425.32

              total payments =  8193.08 + 13425.32 = 21 618.40

Plan2    10 000 (1+ .1)¹⁰  = 25937.42      due at 10 years

    You can finish from here ......

r = 5

2   + 10  + 50 + 250  + 1250 + 6250  +31250 =...........

*** edited ***

Two

when x = 3      f(3) = 5     then     f(5) = 3

and when x = -1     f(-1) = 1     then f(1) = 3

1/4 chance of landing on 2     times     2/3 chance of missing Move back

1/4 * 2/3 = 2/12 = 1/6

First term is 3       next term in arith sequence will be    3 + d    =    3+ 8 = 11

Why did YOU post this question AGAIN...when it was already answered for you .....lazy?