Answer:
39/8= 4 7/8
Step-by-step explanation:
Answer:
5 amperes will produce the maximum power of 300 watts.
Step-by-step explanation:
The general form of a quadratic function presents the function in the form

The vertex of a quadratic function is the highest or lowest point, also known as the maximum or minimum of a quadratic function.
We can define the vertex by doing the following:
- Identify a, b, and c
- Find, the x-coordinate of the vertex, by substituting a and b into

- Find, the y-coordinate of the vertex, by evaluating

We know that the power generated by an electrical circuit is modeled by

This function is a quadratic function.
To find the current that produce the maximum power you must
a = -12 and b = 120
- Find, the maximum current of the vertex, by substituting a and b into


- Find, the maximum-power, by evaluating


5 amperes will produce the maximum power of 300 watts.
We can check our work with the graph of the function
and see that the maximum is (5, 300).
Average cost per mile is $0.6
<h3>How to calculate the average cost per mile?</h3>
To calculate the average cost per mile that Kiara had to pay, we perform the following operations:
We add up all the payments Kiara made related to her car.
- $3,060 + $94 + $128 + $1,080 + $290 + $398 + $1,520 + $930 = $7,500
Later we divide the total value, in the number of miles traveled by Kiara
- $7,500 ÷ 12,500 miles = 0.6
Learn more about average in: brainly.com/question/2426692
The line of the graph would be vertical and to the left of 4 would be shaded.