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Varvara68 [4.7K]
3 years ago
9

Find the domain and range of the following function ƒ(x) = 3|x + 7| - 2?

Mathematics
1 answer:
ad-work [718]3 years ago
4 0
The domain is all real numbers OR (- infinity, infinity)

The range is y>= -2 OR
(-2, infinity)
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I don’t really understand how to get this one :/
KATRIN_1 [288]

in function notation, we get that the transformed function is:

g(x) = -2*f(x - 10) + 800

<h3>How to identify the transformation?</h3>

Here the parent function is:

f(x) = x^2

And the transformed function is the one graphed in the lower right side of the given image.

Notice that the y-intercept of the transformed function is y = 600.

The x-intercepts are x = -10 and x = 30

Then the polynomial is something like:

y = a*(x + 10)*(x - 30)

Using the fact that the y-intercept is y = 600, then:

600 = a*(0 + 10)*(0 - 30) = a*-300

600/-300 = a = -2

The transformed function is:

g(x) = -2*(x + 10)*(x - 30)

Expanding that:

g(x) = -2( x^2 + 10x - 30x - 300)

Completing squares we get:

g(x) = -2*(  x^2 - 20x - 300)

      = -2*(x^2 - 2*10*x - 300)

Now we can add and subtract 100, so we get:

-2*(x^2 - 2*10*x - 300 + 100 - 100)

-2*(  (x - 10)^2 - 400)

Finally, expanding that:

g(x) = -2*(x - 10)^2 + 800

Writing it in function notation, we get that the transformed function is:

g(x) = -2*f(x - 10) + 800

If you want to learn more about transformations:

brainly.com/question/4289712

#SPJ1

3 0
1 year ago
Assume that lines that appear to be tangents are tangents. O is the center of the circle.
scoray [572]

Answer: the value of x is 45

Step-by-step explanation: its a little bit bigger than the 40 on the right

8 0
3 years ago
A plane intersects a prism parallel to the base of the prism. The cross section is a polygon with eight sides. How many sides do
aleksandr82 [10.1K]

Answer:

B.8

Step-by-step explanation:

A plane intersects a prism parallel to the base of the prism. The cross section is a polygon with eight sides.

6 0
3 years ago
Read 2 more answers
BHJGHJWvhjwvhjdvgjdvgwv
sveta [45]

Answer:

................Uhm not a question.....................................................o/o

3 0
2 years ago
The total rainfall in Forks, Washington, this October was 8 3/8 in. In September, 60% less rain fell than in October.
lakkis [162]
Given:
October: 8 3/8 inches
September : 60% less rain fell than in October.

This means that only 40% rain fell in September based on the amount of rain that fell in October.

8 3/8 ⇒ (8*8)+3/8 = 67/8
40% is 4/10

67/8 * 4/10 = 268/80 = 3 28/80 or 3 7/20 or 3.35

28 ÷ 2 = 14
80 ÷ 2 = 40
14 ÷ 2 =   7
40 ÷ 2 = 20

In September 3 7/20 inches or 3.35 inches of rain fell.
7 0
3 years ago
Read 2 more answers
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