The answer is k = 7.
As the graph has been shifted down 7 units, the translation can be represented as :
g(x) = f(x) - 7
(0.5)x - k = (0.5)x - 7
k = 7
Answer: Rico is right.
(-1)(3x + 5)²
Step-by-step explanation: If it were the difference of two squares, the -30x would not be there.
It makes sense to factor out (-1) fry the trinomial, leaving all positive terms.
Then factor 9x² + 30x + 25 as
(3x + 5)²
C = 18
![\pi ](https://tex.z-dn.net/?f=%20%5Cpi%20%0A)
because find the radius by dividing by pi and square-rooting, then multiplying the radius by 2 to get the diameter. Then multiply by pi to get the circumference
The given radius is 2 cm.
Therefore the circumference of the circle is
2π*(2 cm) = 4π cm.
From the calculator, obtain
4π = 12.56
Answer: A. 12.56 cm