Answer:
-6 is the numeral cofficient

Step-by-step explanation:
The vertex form of the equation for a parabola is given by

where (h, k) are the coordinates of the parabola's vertex. Since the vertex is at (1, -6), we can write the equation as

Also, since the parabola passes through (4, -7), we can use this to find the value for a:

or

Therefore, the equation of the parabola is

The equivalent expression is b)
The second one
The price was $824.85 before the discount (yesterday)
Answer:
see explanation
Step-by-step explanation:
is in the fourth quadrant
Where sin and tan are < 0 , cos > 0
The related acute angle is 2π -
= 
Hence
sin([
) = - sin(
) = -
= - 
cos(
) = cos(
) = 
tan(
= - tan(
= - 1