Solve the differential equation.y' + 2y = 21
A. y = 
+ e2x + Ce-2x
B. y = 
+ Ce2x
C. y = 21 + Ce2x
D. y = 
+ Ce-2x
Answer: D
Mathematics
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For the compound inequality, give the solution set in both interval and graph forms.-2b + 4 < 10 or -2b + 4 ? 18
A. (3, 7]
B. (-?, -7] ? (-3, ?)
C. [-7, ?)
D. (-?, -3)
Mathematics
Fill in the blank.
angle has a measure of 90°.
A. A right B. An obtuse C. A straight D. An acute
Mathematics
Determine the specific solutions (if any) to the equation on the interval [0, 2?).csc5 ? - 4 csc ? = 0
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. 
, 
, 
, 
Mathematics
Solve the problem.A young woman wins $150,000 and buys 5 new cars. She chooses from cars that are priced at $40,000, $30,000, and $25,000 and spends all of the money. How many $25,000 cars did she buy?
A. 0, 1, 2, or 3 B. 0 C. 0 or 2 D. 6
Mathematics