.55 is the answer. I hope this helped a great deal!
The question is "What's Stella's opportunity cost of working on her serve for an hour?" The rest of the info looks like it's meant to confuse you. They charge $10 an hour. She values an hour of her time at $20. I believe that means she would pay $20. Hope this helps!
If rooster = 6 eggs =10 banana = 5 and 6+10x5= 56
Trapezoid
it has four sides and 1 set of parallel lines
