Find the numbers at which f is continuous. At which numbers is f discontinuous?f(x) = -4 cos x
A. continuous for all real numbers
B. continuous for all real numbers except x = -4
C. continuous for all real numbers except x = 1
D. continuous for all real numbers except x = 0
Answer: A
Mathematics
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A. 
B. 
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D. 
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Write the mixed number as an improper fraction.3
A. 
B. 
C. 
D. 
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Translate to an equation and solve.2.7 is what percent of 300?
A. 300 = n% × 2.7; n = 0.09% B. 300 = n% × 2.7; n = 11,111.11% C. 2.7 = n% × 300; n = 0.9% D. 2.7 = n% × 300; n = 0.009%
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Write the number in scientific notation.-44,000
A. -4.4 × 10-5 B. -4.4 × 10-4 C. -4.4 × 105 D. -4.4 × 104
Mathematics