Final answer:
The ticket price that maximizes revenue for the musical theater group is approximately $18.10. This is found by establishing a revenue function based on a downward-sloping demand curve and using calculus to find the price at which the derivative of the revenue function is zero.
Step-by-step explanation:
To calculate the ticket price that maximizes revenue for a musical theater group, we need to use the demand function that relates the price and quantity sold. We start with the information that at a price of $8.5, all 1800 seats are filled. For each additional dollar charged, 65 fewer tickets are sold. The revenue function, R(p), can be expressed as the product of the number of tickets sold and the price per ticket.
The number of tickets sold can be represented as 1800 - 65(x - 8.5), where x is the new ticket price. We use x - 8.5 since the decline in ticket sales starts after an increase from the initial $8.5 price.
The revenue function is then: R(x) = x * (1800 - 65(x - 8.5)). Expanding this, we get: R(x) = x * (1800 - 65x + 552.5) = 1800x - 65x2 + 552.5x. Now, let's calculate the derivative of R(x) and set it to zero to find the maximum.
The derivative of R(x) is: R'(x) = 1800 - 130x + 552.5. Setting this to zero, we get 130x = 2352.5, resulting in x = 2352.5 / 130 ≈ $18.10. Therefore, the ticket price that maximizes revenue is approximately $18.10.
Raising the ticket price beyond $8.5 decreasing the audience size due to the downward-sloping demand curve, but up to a certain point, the increase in ticket price compensates for the lower number of tickets sold, thus maximizing revenue.