Answer:
9
Step-by-step explanation:
By joining N to L, you will have a right angled triangle which is right angle at N. Then r^2+36=(3+x)^2. r=9/2. PQ=2r=9
She can buy 3 pairs for $9.00 with $2.00 extra.
In the triangle we have the following trigonometric equations:
and also:
-z=14-x+5y
z=x-5y-14
Solved