9 cups of tea were sold.
For each 6 cups of coffee, 1 cup of tea was sold. So 54/6 = 9.
27.8 × 9.6 is equal to <span>266.88</span><span>
So, the closest would be A. 280.</span>
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!
To find the length of the side, will take the under root of the area. So, the side will be :
c) 24.4 cm
Total number of students = 35
Number of male students = 14
% of students that are male =

= 40 %