Solve the inequality. 
? 0
A. (-?, -3] or (-2, -1) or [1, ?)
B. (-?, 1] or [3, ?)
C. (-?, 1) or (3, ?)
D. (-?, -3) or (-1, ?)
Answer: B
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Solve the indicated equation analytically.A coil of wire rotating in a magnetic field induces a voltage given by 
where t is time in seconds. Find the smallest positive time to produce a voltage of 10
.
A. 2.8 s B. 2.8? s C. 3 s D. 3? s
Find the amount of taxable income and the tax owed. The letter following the name indicates the marital status, and all married people are filing jointly. Use $3700 for each personal exemption; a standard deduction of $5800 for single people, $11,600 for married people filing jointly, $5800 for married people filing separately, and $8500 for head of a household; and the following tax rate schedule. 
A. $81,590; $12,647.50 B. $95,621; $16,155.25 C. $92,690; $15,422.50 D. $84,521; $13,380.25
The Ross-Simons Company has a monthly advertising budget of $20,000. Their marketing department estimates that if they spend x dollars on newspaper advertising and y dollars on television advertising, then the monthly sales will be given by
?
?
dollars. Determine how much money Ross-Simons should spend on newspaper ads and on television ads each month to maximize its monthly sales.
?
A. $15,000 on newspaper advertisements and $5,000 on television advertisements B. $13,000 on newspaper advertisements and $3,000 on television advertisements C. $18,000 on newspaper advertisements and $8,000 on television advertisements D. $16,000 on newspaper advertisements and $6,000 on television advertisements
Simplify the expression by performing the indicated operations.
? 
+ 
? 
A. 6
B. 7
C. 36
D. 15