The vertex of this parabola is at (5, -4). which of the following could be its equation.

B

Step-by-step explanation:

Since the y coordinate of the vertex is -4, it has to be the rest of the equation subtracted by 4, which eliminates A and C.

Adding 5 puts it on the left side, so you have to subtract 5.

Then you add all the default info and the info we found out.

y = 2(x-5)^2-4

So technically by process of elimination, B must be the answer.

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%