Answer:
C.
Step-by-step explanation:
Jennifer completed the square by adding 1. However, to keep both sides equal, she should have added 1 to both sides:
y + 1 = (x² + 2x + 1) + 7
Or, she should have added 1 and subtracted 1 from the same side.
y = (x² + 2x + 1) + 7 − 1
The correct vertex form of the equation is:
y = (x + 1)² + 6
Answer:
A
Step-by-step explanation:
Note that
and
Then
Since 
you have that 
1-(-18)= 19
sense the subtract and negative cancel out, look at it as a plus sign between 1 and 18 so 1+18=19
Answer:
47.8
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
a and b add to 180 degrees also known as a straight line
