TÌM MIN P=x^2/y^2+y^2/x^2+3(x/y+y/y)

Sorry guys but as you have a small brain

What is the value of x in the diagram below?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60