Answer:
4) 2(x - 3)^2 + 2(y + 5)^2 = 96.
Step-by-step explanation:
2x^2 – 12x + 2y^2 + 20y – 28 = 0
2(x^2 – 6) + 2(y^2 + 10y) = 28
2 ( (x - 3)^2 - 9)) + 2((y + 5)^2 - 25) = 28
2(x - 3)^2 - 18 + 2(y + 5)^2 - 50 = 28
2(x - 3)^2 + 2(y + 5)^2 = 28 + 18 + 50
2(x - 3)^2 + 2(y + 5)^2 = 96
So you know that 1 cubic foot is equal to 80 pounds. So, the first point would be (1,80).
You can find the other points by multiply 80 by a number, and when I did that, I got (2,160) and (3,240) too.
I hope this helps :)
The interest Ernesto will earn in 1 year to the nearest cent is 2200 cents.
<u>Given the following data:</u>
To calculate how much interest Ernesto will earn in 1 year to the nearest cent:
<h3>How to calculate
compound interest.</h3>
Mathematically, compound interest is given by this formula:

<u>Where:</u>
- P is the principal or starting amount.
- T is the time measured in years.
Substituting the given parameters into the formula, we have;

B = $22.
<u>To cents:</u>
B = 
B = 2200 cents.
Read more on interest here: brainly.com/question/24341207