Answer: 19.4
Step-by-step explanation:
Given
Profit is given in terms of the selling price

to get the maximum price, differentiate y w.r.t x

Put
to get maximum value

Thus, the company must sell it at 19.4
Number 5 i dont know. i got 8.85×10^6, but its not one of the choices. number 6 i got A.12.57
Answer:
one solution
Step-by-step explanation:
Answer:
x=y-4 is x=y-4
y=2+ 2x/2
Step-by-step explanation:
Answer: 66 because you are adding 2 then 4 then 6 then 8 then 10 then 12 therefore 17+10= 27, and 27+12= 39 and 39+27 equals 66