Determine the indefinite integral. Check your work by differentiation.
dx
A. 2 cot x + C
B. -2 tan x + C
C. 
+ C
D. -2 cot x + C
Answer: B
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Perform the operation and reduce to lowest terms.1
× 4 × 
A. 5
B. 4
C. 42
D. 2
Translate the English sentence into an equation using the variables indicated.Raoul and Jeremy both had summer jobs. At the end of the season they had worked a combined total of 755 hours. Use r for the number of hours Raoul worked and j for the number of hours that Jeremy worked.
A. j = r - 755 B. r - j = 755 C. j = 755r D. r + j = 755
Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.
A. 2x24
B. 2x4
C. 
D. 
Identify the probability statement as empirical or not.The probability of getting heads on two consecutive tosses of a coin is 0.25.
A. Empirical B. Not empirical