Answer:
5 amperes will produce the maximum power
Step-by-step explanation:
The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by: P(c)= -12c^2 + 120c.
To find out the maximum power we need to find the vertex
formula to find x -coordinate of vertex is 
P(c)= -12c^2 + 120c is given in the form of y=ax^2+bx+c
a= -12, b = 120

c= 5 amperes will produce the maximum power
Three boxes, if you divide 23.55 by 7.85 you get the total of 3
Answer:
Step-by-step explanation:
Yes it 120
Multiply 65 by .45 which is 29.25, and you add it to 65 since it says “markup” in the problem. So the answer is $94.25