We have the equation

Let's complete the square, to do it let's add and subtract 25 on the right side

Now we can have y in function of x

Now we can already identify the vertex because it's in the vertex form:

Where the vertex is

As we can see, h = 5 and k = -2, then the vertex is

Now we can continue and find the focus, the focus is

We have a = 1/20, therefore

The focus is

And the last one, the directrix, it's

Then

Hence the correct answer is: vertex (5, -2); focus (5, 3); directrix y = -7
Answer:
Step-by-step explanation:
point slope form
y + 6 = -3(x - 4)
point slope to y-intercept
y + 6 = -3x + 12
y = -3x + 6
They all measure some sort of data
Answer: 
Step-by-step explanation:
The given geometric series are:
a)
on simplifying in decimals, we get

b) 
on simplifying in decimals, we get

c)
on simplifying in decimals, we get

Thus, this geometric series represent 0.4444.
d)
on simplifying in decimals, we get
