So this is a common type of question. Don't overthink this, this is an isosceles triangle, meaning that the length of PR and QR are the same.
So set it up like this : 5n=32+n
Minus n on both sides, you get 4n=32
Divide by two on both sides, n=8
Now, PR= 5n so it would be 8*5
So the length of PR is 40 units
It will be 7 1/2 since it goes into 30 7 times and has 2 left then you simplify it to 1/2
Factored form: c(c-8) = 0
Then apparently, c = 0 or c = 8
Answer: email your teacher and ask lol
Step-by-step explanation: