Answer:
a) R'(x) = $1.1
b) P'(x) = 1 - 0.004x
Explanation:
Given:
Charges for per serving of pasta = $1.10
let the total number of pasta served be 'x'
Therefore,
Revenue, R(x) = $1.1x
a) Now,
Marginal revenue, R'(x) = [tex]\frac{d(1.1x)}{dx}[/tex]
= $1.1
b) cost function , C(x) = 370 + 0.10x + 0.002x²
also,
Profit = Revenue - Cost
thus,
P(x) = R(x) - C(x)
= $1.1x - (310 + 0.10x + 0.002x²)
Now,
Marginal profit, P'(x) = [tex]\frac{d(1.1x - (370 + 0.10x + 0.002x^2))}{dx}[/tex]
or
= 1.1 - 0 - 0.10 - 2(0.002x)
or
P'(x) = 1 - 0.004x