Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.x < 4 or x < 8
A. (-?, 8)
B. (4, 8)
C. (-?, 4)
D. (-?, 4) ? (8, ?)
Answer: A
Mathematics
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Determine the exact amount of dextrose and NaCl in 500 mL D5 0.22S.
A. 1.1 g dextrose; 25 g salt B. 25 g dextrose; 1.1 g salt C. 2.5 g dextrose; 1.1 g salt D. 5 g dextrose; 0.22 g salt
Mathematics
Solve.The difference between a country's exports and imports is called the country's trade balance. In 1981, a country had $215 billion in exports and $180 billion in imports. What was the country's trade balance in 1981?
A. 395 billion dollars B. -35 billion dollars C. -395 billion dollars D. 35 billion dollars
Mathematics
Complete the equation so the result is an identity. 
= 
A. tan x B. sec x C. cot x D. csc x
Mathematics
Simplify. Assume that each variable is nonnegative.2 
- 4 
A. 8 
- 4 
B. 2 
- 4 
C. 24 
D. 0
Mathematics