Solve the inequality, then graph the solution.-10x ? 20
A. (-?, 2]
B. [-2, ?)
C. (-?, -2]
D. [2, ?)
Answer: C
Mathematics
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Solve the problem.Find the equation for which 
= -5? sin ?x e cos ?x is the curve through the point 
.
A. y = 5? ecos ?x + 12.6? B. y = 5 esin ?x - 5e + 17.6 C. y = 5 ecos ?x + 12.6 D. y = -5? esin ?x + 5?e - 17.6?
Mathematics
Solve the problem.A trough is to be made with an end of the dimensions shown. The length of the trough is to be 
long. Only the angle ? can be varied. What value of ? will maximize the trough's volume?
A. 32° B. 30° C. 50° D. 10°
Mathematics
Find the annual straight-line rate of depreciation for the estimated life.30 years
A. 1.7% B. 30% C. 0.3% D. 3.3%
Mathematics
Graph the function.y =log1/4x
A. 
B. 
C. 
D. 
Mathematics