What is the value of i^20+1?

everyone on here is saying that it’s 2 ? but my options are:

a. 1
b. -1
c. -i
d. i

Which expression is equivalent to 5r6141 2r+st6

In which form is the following function written? y = - 2(x – 3)(x + 5)

Atravel agent is booking a trip to england, scotland, ireland, and france for a group of senior citizens. the agent sent surveys to the group, asking which countries they would like to visit, in order, and created the shown preference schedule (e = england, i = ireland, s = scotland, f = france). which country is the condorcet winner? number of votes 15 12 16 19 1st f e e i 2nd e s i s 3rd s i s e 4th i f f f 1. scotland 2. england 3. france 4.ireland