Answer: Choice A
The fractions are not equivalent because the product of the numerator of the first fraction and the denominator of the second fraction is <u> 15 </u> , which is not equal to the product of the numerator of the second fraction and the denominator of the first fraction <u> 16 </u>
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Explanation:
We have the template
which cross multiplies to 
So if
was true, then
must be true as well, and vice versa.
The left side 3*5 turns into 15, while the right hand side 4*4 becomes 16. The 15 and 16 don't match up.
In short,
turns into
which is a false statement. So the original claim that
is also false.
It would be in the ten thousands place.
If the vertex of the parabola is (h,k) the equation of the parabola will be
y = a(x - h)² + k
From the question (h,k) is (2,-4) then the equation of the parabola will be
y = a(x - 2)² + (-4)
Compare the equation
y = a(x - 2)² + (-4)
with
y = 9(x - 2)² + v
The value of a is 9 and the value of v is (-4).
The answer of the question ⇒ the value of v is (-4)
The function is not invertible if you think of it as

because it is not injective: 
So, if we restrict the domain to the positive numbers only:

Note that the range is actually
, so we can be more precise and write

To find the inverse, we solve the expression for x:

But since we restricted to positive values of x, the inverse is
