Answer:
B
Step-by-step explanation:
I just did it Red Riot out
Vertex is

and minimum value of f(x) is 12
Hope this helps
Answer:
b+5
Step-by-step explanation:
If the number in the unit's place is b and the one in the tens place is 5 more than that in the ones place, then the number is b+5 .
Answer: x = 7, x = -15
Step-by-step explanation:
This is an absolute value equation, so it has to be simplified first
|x+4|+10=21
|x+4|=11
Then you set it equal to the two values it can be, getting rid of the absolute value sign.
x+4=11
x+4=-11
x = 7
x = -15
Voila!