Solve the compound inequality. Write your answer in interval notation or state that there is no solution.1 - 4x ? 9 or 6x + 3 ? -21
A. (-?, -4] ? [-2, ?)
B. (-?, -4) ? (-2, ?)
C. [-2, ?)
D. (-?, ?)
Answer: D
Mathematics
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Add or subtract as indicated. Simplify the result whenever possible. Write any answer that contains an improper fraction as a mixed number. 
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.What is the minimum force required to prevent a ball weighing 28.2 lb from rolling down a ramp which is inclined 12.1° with the horizontal? Round to the nearest tenth.
A. 3 lb B. 13.8 lb C. 27.6 lb D. 5.9 lb
Mathematics
Add or subtract. Write the answer in lowest terms.
+ 
A. 
B. 
C. 6y
D. 0
Mathematics
In the circuit below, find IT in rectangular form if IR = 7 mA and IC = 9 mA.
a. 16 mA - j2 mA
b. 16 mA + j16 mA
c. 9 mA + j7 mA
d. 7 mA + j9 mA
e. -2 mA + j16 mA
Mathematics