1) A normalized load admittance of (0.2 + j0.2) needs a single stub tuner.

i) how far down the line should it be located?

ii) what is normalized admittance at the point just to right of where stub should be attached?

2) A certain point along a transmission line the normalized admittance is (1+j1.5)

i) Design the short-circuited stub necessary to change the normalized admittance to (1+j0)

I would prefer the use and explanation of a smith chart. If you want to solve analitically feel free to do so.

He was refused admittance to the club.

His admittance was a shock to the courtroom.

The cost of admittance into the Comic Con was 10 dollars. This is an example of admittance.

Admittance is the act of admitting or permission to enter.

The correct spelling is "admittance" (entrance, entry).