Answer:
See below
Step-by-step explanation:
For the model function
,
is the vertex, and
is the horizontal growth or shrink factor.
We know that our vertex is
from our graph, so we'll need to determine the value of
by using one of the points on the graph:

Thus, our equation for the given graph is
.
The domain of a function is the set of all existing real x-values, thus, our domain for the given function is
, or all real x-values.
The range of a function is the set of all existing real y-values, thus, our range for the given function is
, or all real y-values starting with y=-1 which is included.
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Answer:
Circumference of the smaller circle = 2.1x units
Step-by-step explanation:
Given question is incomplete; here is the complete question.
Two similar circles are shown. The circumference of the larger circle, with radius OB, is 3 times the circumference of the smaller circle, with radius OA. Radius OB measures x units. Which expression represents the circumference of the smaller circle with radius OA ?
Radius of the larger circle OB = x units
Radius of the smaller circle OA = y units
Circumference of larger circle = 2πx units
Circumference of smaller circle = 2πy units
Since circumference of larger circle is 3 times the circumference of smaller circle,
2πx = 3(2πy)
2πx = 6πy
x = 3y
y = 
Therefore, circumference of the smaller circle =
units
=
units
= 2.094x
≈ 2.1x
Circumference of the smaller circle circle = 2.1x units
5/$3.00 is the unit rate. Hope it helps!
1. B
2. D
3. I don't know
4. C