<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0,
</span><span>kf(x) = -x², a= -1<0
so the answer is </span><span>B.kf(x) </span><span>
</span>
C)36
1)Since X=2 and y=4, in order to evaluate it. Let's plug it in those values.
But firstly, we need to apply the Distributive Property.
x+y+3(x+2y)
x+y+3x+6y
2) Now let's add the similar terms
x+3x +6y+y
4x+7y
3) Plugging in
4(2)+7(4)
8+28
36
Answer:
13/4
Step-by-step explanation:
