Step-by-step explanation:
62/3-21
62/18=0.290
290/6
Divide it
21/4 ÷ 14/9
21/4 × 9/14
189/56
3/3/8

x = 2
<em>right</em><em> </em><em>option</em><em> </em><em>is</em><em> </em>(E).
Step-by-step explanation:
f(x) = x³ - 3x² + 12 in interval [-2, 4]
{taking f'(x) by doing derivative of f(x)}
f'(x) = 3x² - 6x
.•. f'(x) = 0
0 = 3x² - 6x
0 = 3x(x - 2)
0 = x - 2
x = 2
600 in3
Work:
8•15
120•10
1200/2
=600in3