Answer:
The current that produces maximum power is 3A
Step-by-step explanation:
Given

Required [Missing from the question]
The current that produces maximum power
First, we represent the function in standard form


Open bracket


The maximum value of c is:

Where:

By comparison: 



So, we have:




Answer:
<h2>V = 605 in³</h2>
Step-by-step explanation:
The formula of a volume of a pyramid:

B - area of a base
H - height
We have the square in the base with side length a = 11 in.
Area of a base:

Calculate the volume:

Answer:
It does not show variation
Step-by-step explanation:
Given

Required
Determine if there's direct variation between x and y
The general form of direct variation is:

Make y the subject of formula in the given parameters;


Compare
to 
<em>Since they are not of the same form, then the given equation do not show direct variation</em>
For 3/11 the difference is 8 the sum is 14.the difference of 13/5 is 8 the sum is 18
1. C
3/8 = 0.375
Hope this helped.