I don't remember the question with y1^2 was that the tumbler question?
For first of the unseen answers, I got:
1)pre-high blood pressure because it was 150 over 100 or something
2)150/100 = 3/2
3/2*60= 90
90 BMP
3) forgot the other questions. I think it said to find the average blood pressure or something, which was like 125, reading from the graph.
only question 4 and the one with the diameter had me questioning.
Last question, 1) 40Picos(4pi(x)) and the graph for mine looked like a w
2) just showed by putting 1/2 into x to show the max was 125.66
or 40pi(1) = 40pi which is 125.66 hence max.
If you would like can you also share some of your answers thanks.