Answer:
52
Step-by-step explanation:
12 + (38 - 18)2 = 12 + 20 × 2 = 52.
Two acute angles is the least amount.
<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>
