The function f(x) = –(x – 3)2 + 9 can be used to represent the area of a rectangle with a perimeter of 12 units, as a function o
f the length of the rectangle, x. What is the maximum area of the rectangle?
3 square units
6 square units
9 square units
12 square units
1 answer:
Answer:
9 square units
Step-by-step explanation:
f(x) = -(x - 3)² + 9
= 9 -(x - 3)²
9 minus something, the result is always less than 9, at most equal to 9.
So the maximum f is 9 square units
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A television used to cost $9,000 and today it costs
$500 less, what is the percentage of
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Percentage discount: 5 5/9 percent
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Step-by-step explanation:
Does this help?
B.
It can first be factored by splitting to:
(x + 1)(x^2 +4)
And (x^2 + 4) splits to x +/- 2i
