Answer:
B.
Step-by-step explanation:
Vertex with (2,4) means that the equation will have:
y=a(x-2)^2 + 4
Open downwards means that the a will be negative:
so: y = -a (x-2)^2 + 4
Stretched by a factor of 3 means that the a=3
So if we combine all of these, we will get the equation:
y = -3 (x-2)^2 + 4
1. a(x+b)
2. ax+ab
example:
2(x+3)
=2.x + 2.3
=2x + 6
Baldy is on Brainly to smack us AHhHhHh but I don’t know how to solve your problem
X^2 +3x - 18 is the answer