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!
Answer:
Step-by-step explanation:
p'=(1-0.39)=0.61
Answer:
131.6 Newtons
Step-by-step explanation:
30 ÷ 0.228 =131.6 Newtons
The answer to ur question is 4