Write down all the subsets of the given set.{4, ?, 8, ?}
A. {4}, {?}, {8}, {?}, {4, ?}, {4, 8}, {4, ?}, {?, 8},
{?, ?}, {8, ?}, {4, ?, 8}, {4, ?, ?}, {4, 8, ?}, {?, 8, ?}, ?
B. {4}, {?}, {8}, {?}, {4, ?}, {4, 8}, {4, ?}, {?, 8},
{?, ?}, {8, ?}, {4, ?, 8}, {4, ?, ?}, {4, 8, ?}, {?, 8, ?},
{4, ?, 8, ?}, ?
C. {4}, {?}, {8}, {?}, {4, ?}, {4, 8}, {4, ?}, {?, 8},
{?, ?}, {8, ?}, {4, ?, ?}, {4, 8, ?}, {?, 8, ?},
{4, ?, 8, ?}, ?
D. {4}, {?}, {8}, {?}, {4, ?}, {4, 8}, {4, ?}, {?, 8},
{?, ?}, {8, ?}, {4, ?, 8}, {4, ?, ?}, {4, 8, ?}, {?, 8, ?},
{4, ?, 8, ?}
Answer: B
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Solve the equation using the multiplication principle.15 = -3k
A. -5 B. -18 C. 18 D. 1
Given that p and q each represents a simple statement, write the indicated compound statement in its symbolic form.p: The outside humidity is low.q: The central humidifier is running.r: The air in the house is getting dry.The air in the house is getting dry, if and only if the outside humidity is low and the central humidifier is not running.
A. (p ? q) ? r B. r ? (p ? ~ q) C. r ? (p ? q) D. (r ? p) ? ~ q
Find the exact value of the following expression without using a calculator.cos 
A. 
B. 
C. 
D. 
Solve the problem. Round to the nearest tenth if necessary.Last year, Maria earned $349 per week. This year, her salary increased to 
per week. What is the percent of increase?
A.
| 92.3% |
B.
| 7.2% |
C. 7.7%
D.
| 92.8% |