hey can someone explain what i need to do here?

thank you!

e) 256 81 re 4. For f(x) = 36 - 6x and g (x) = 5x-5 find the following: a) Zk=If (k) = f(1) + f(2) + f(3)+ ...+f(30) Cel b) Enzo g (h) = g(0) + g(1) + g(2)1+ ... + g(29) 5. If the 8th and the 19th term of an arithmetic sequence are 9 and -24 respectively, find the 50th term and the sum of the first 61 terms in the sequence 6. A man deposits $2,000 in an IRA on his 21st birthday and on each subsequent birthday up to, and including, his 29th. The account earns 8% compounded annually. a) If the man leaves the money in the account without making any more deposits, how much will he have on his 65th birthday, assuming the account continues to earn the