Answer:
"Surface area of any pyramid = area of base + area of each of the lateral faces.
If the pyramid is a regular pyramid, we can use the formula for the surface area of a regular pyramid."
Hope that helped
A*2 + b* = c*2
(9)*2 + (8)*2
81+64= 145
145=c*2
12.04=c

where A is area
a is side a lets say its 8cm
b is side b lets say its 7 cm
theta is 28
As a practical equation, this one doesn't make much sense -- why would the profit per person have a term proportional to the number of people? Let's just go with it.



That's the answer to the first part.
35/x represents a portion of the profit that's 35/x per person, or a constant $35 per tour.