Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc. Also use ^ to indicate powers (eg x-squared = x^2).
It would appear that some symbols are missing: for example, between y and x-y. Second, the equations, such as there are, are not mutually consistent.
18
You would convert it to vertex form by completing the square. You can also find the optimum value as optimum value and vertex are the same.
That depends what either the value of a or the value of b is.
7
7
Divide the percentage by 100 and that is the value.
c7
5s = 0
2
That would be 10
n equals 52
p=3 !