Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.sin 495°
A. 
B. - 
C. - 
D. 
Answer: D
Mathematics
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Solve by completing the square.x2 + 14x = -40
A. 4, 10
B. -4, -10
C. ±
D. 50, -10
Mathematics
Solve the problem.Suppose the supply and demand for a certain videotape are given by: supply: p = 
q2; demand: p = - 
q2 + 32where p is price and q is quantity.How many videotapes are demanded at a price of $24?
A. About 8 B. About 7 C. About 9 D. About 6
Mathematics
Solve the problem.A meteorologist in the Upper Peninsula of Michigan predicts an overnight low of 
Fahrenheit. What would a Canadian meteorologist predict for the same location in Celsius?
A. -23.3° B. -10° C. -42° D. -5.6°
Mathematics
Multiply.-2.2(-18)
A. -15.8 B. 20.2 C. -20.2 D. 39.6
Mathematics