Solve the problem.A private shipping company will accept a box for domestic shipment only if the sum of its length and girth (distance around) does not exceed 90 in. Suppose you want to mail a box with square sides so that its dimensions are 
and it's girth is 
What dimensions will give the box its largest volume?
A. 30 in. × 15 in. × 30 in.
B. 20 in. × 20 in. × 15 in.
C. 15 in. × 15 in. × 75 in.
D. 15 in. × 15 in. × 30 in.
Answer: B
Mathematics
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Match the equation with the surface it defines.
- 
= 
A. Figure 4 B. Figure 3 C. Figure 1 D. Figure 2
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Solve the given differential equation.y"' - 48y' - 128y = 0
A. y = C1e8x + (C2 + C3x)e-4x B. y = C1e-4x + (C2 cos 8x + C3 sin 8x) C. y = C1e8x + C2e-8x + C3e-4x D. y = C1e-4x + (C2 + C3x)e8x
Mathematics
Find the acceleration of an object for which the displacement s (in m) is given as a function of the time t (in s) for the given value of t.s = 0.1(1 + 3t)4, t = 0.3 s
A. 4.3 ft/s2 B. 15.6 ft/s2 C. 3.3 ft/s2 D. 39.0 ft/s2
Mathematics
Find the domain of the given function.f(x) = 
A. (-?, ?) B. (-?, 3] C. (-?, 0) ? [3, ?) D. (-?, 3) ? (3, ?)
Mathematics