Answer:
D. (-2,1)
Step-by-step explanation:
we have

This is the equation of a vertical parabola open upward The vertex represent a maximum
Convert the quadratic equation in vertex form

where
(h,k) is the vertex
Complete the square



Rewrite as perfect squares

The vertex is the point (-2,1)
Step-by-step explanation:5
Answer:
The first step to do is trying to find the closest perfect square less than 845, and the closest perfect square more than 845.
In this case 29^2 (841) is the closest perfect square less than 845, and 30^2 (900) is the closet perfect square more than 845.
In conclusion we will say that 29 < √ 845 < 30.
Hope it helps you.
Y=-14/3 or -4.66666667 repeated
Cross multiplying:-
18*x = 12*30
x = 360 / 18
x = 20 answer