Answer:
(a)
(b)
(c)R'(5400)=$394
Step-by-step explanation:
Given that x is the quantity demanded and the speaker's unit price (in dollars) is p where:
p = −0.02x + 610 (0 ≤ x ≤ 20,000)
(a)Revenue function R.
Revenue = Price X Quantity Demanded
Therefore:
R(x)=xp

(b)Marginal revenue function R'(x)
If 
Then, the marginal revenue function

(c)We want to compute R'(5,400)

From the above, we can infer that the revenue that will be generated on the sales of the 5401st item is $394.
Answer:
D. 75(5r+3d+4f) and 75(5r)+75(3d)+75(4f)
I think it’s -4, i may be wrong. i plugged in the -1 for x
(x+1) (x+3)
the zeroes of the function are negative 1 and negative 3
She could measure the next length to the left or right and she will have all 4 sides because a rectangle has 2 sets of equal sides.