Answer:
C
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k ) are the coordinates of the vertex and a is a multiplier
y = (x + 7)² - 9 ← is in vertex form
with h = - 7 and k = - 9
vertex = (- 7, - 9 )
The chance that any given bulb is on is equal to 1/2. The chance that all twenty bulbs are on at the same time is
Number 1 76
number 2 760,000
number 3 760
The x access is horizontal and the y access is vertical. you start from 0 then go to your number on the x access from there go up on the y access.<span />