Final answer:
The demand function in terms of the cost c is found by substituting p(c) = 2c - 10 into the original demand function, yielding D(c) = -c^2/29 + 10c/29 + 75/29.
Step-by-step explanation:
The original demand function D(p) is given by D(p) = -p2 / 116 + 200, where p is the price in dollars. The price in terms of cost c is given by p(c) = 2c - 10. To find the demand function in terms of cost, substitute the expression for p in terms of c into the demand equation.
Performing the substitution, we get:
D(c) = - (2c - 10)2 / 116 + 200
Simplifying the equation:
D(c) = - (4c2 - 40c + 100) / 116 + 200
= -4c2/116 + 40c/116 - 100/116 + 200
= -c2/29 + 10c/29 + 75/29
The simplified demand function D(c) shows the demand in terms of the cost c.