Answer:
OR
Step-by-step explanation:
Vertex form of a parabola is given as:
Where (
) is the vertex and 
are the points on the parabola.
We are given that, the vertex is (3, -2) and another point on parabola is given as (2, 3).
First of all, putting the vertex in the vertex equation as given above:
Now, putting the values of 
as 2, 3 and let us find the unknown variable 
:
Therefore, the equation in vertex form can be written as:
OR
Answer:
57.5 students
Step-by-step explanation:
Given that
The 30% students would be arrived by private car
So 15% would be travelled by taxi
And, the remaining i.e. 55% would be walk to school
Since the population of the school is 230
So by car, the students would be
= 230 × 0.30
= 69
By walk, the students would be
= 230 × 0.55
= 126.50
Now the more students would be
= 126.50 - 69
= 57.5 students
A or B it was multiplies by 2
So 75% B and 25% chance A
The answer would be B because he is gonna babysit for 4 hours and will charge $40 plus $4. So for the 4 hours he will earn $16 plus 40.
