How is everyone's day, Just want to say hello. UwU

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

Find the amount in a continuously compounded account for the given condition. principal: $1000, annual interest rate: 4.8%, time: 2 yr