The answer: b><span><span><span>4<span> or </span></span>b</span><<span>−<span>5</span></span></span>
Answer:
x <= -42.5
Step-by-step explanation:
65 - 2x >= 150
-2x >= 150 - 65
-2x >= 85
2x <= -85
x <= -85/2
x <= -42.5
Let

. Then

, and differentiating both sides with respect to

gives


Now, when

, you get

You have

, so

and

. So
6.8,6.827,6.86,6.9
1.2,1.203,12.03, 12.301,12.31