By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.
<h3>What is quadratic equation ?</h3>
Any equation of the form
where x is variable and a, b, and c are any real numbers where a ≠ 0 is called quadratic equation .
Given work of Penelope is

Now we can see that Penelope determined the solutions of the quadratic function by completing the square. so he must have been done as following

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.
To learn more about quadratic equations visit : brainly.com/question/1214333
Let
x= total cost of cars
y= total commission paid out for all cars sold
6%= 6/100 = .06
Set up an equation:
y= .06(x)
Given: x= $125,650
substitute into the y= .06(x)
multiply $125,650 by .06.
The answers would be: 7539
hope this helped :)
Answer:360
Step-by-step explanation:
Answer:
In each shelves there are 64/4 books I.e. 16.
Answer:
7
Step-by-step explanation:
also why is 78 there? a factor means in that range