question 9 a manufacturing company produces two types of surfboards st

Question

QUESTION 9
A manufacturing company produces two types of surfboards - Standard board and competition board.
The price demand function for the two types of boards are given by the equations
P₁ = 210 - 4x +y
P₂ = 300+x - 12y
p is the price of standard board and p is the price of competition board.
x is the weekly demand of standard board and y is the weekly demand of competition board.
Find the weekly revenue function and evaluate R (50,20)
- R(x,y) = 210x +300y + 2xy −4x² −12y²
R (50,20) = 3700
- R(x,y) = 2x² - 4y² + 3xy -150y + 200x
R (50,20) = 5400
- R(x,y) = 12x = 15y + 4xy − 3x² - 10y ²
R (50,20) = 2500
- R(x,y) = -3y² + 12xy - 150y + 120x + 15x²
R (50,20) = 3450