I attached a photo of the work.
If you have any further questions feel free to ask.
Hope this helps
f(x) = ((x^2) / 3) + x, for f(6)
f(6) = ((6^2) / 3) + 6
Square 6
f(6) = (36 / 3) + 6
Divide 36 by 3
f(6) = 12 + 6
Combine like terms
f(6) = 18
Answer:
1000-400= 600 so 600/9.50 = Approx 63, so 63 people
8.25h = 206.25
206.25 ÷ 8.25 = 25 hours
