Well reading and understanding the instructions properly is actually part of the test.
I just concluded things based on what previous post mentioned, and what logically could be deduced from what was present, without any instructions.
Still got time to understand these instruments, if hasn't been exposed for flight instruments, and this is first time, should not judge to harshly about what this might be telling, is just 17, and should not start to discourage someone at that age.
But I do suggest instead of just jumping blindfolded into the test like this, read slowly trough the instructions, take some notes and mental notes.
If not there are plenty of options online where you can get better understanding for these instruments.
luizmonteiro - Aviation Calculations Home
this is a good website to find out some more stuff, mostly for free also.