Express the radical in simplified form. Assume that all variables represent positive real numbers.
A. 3ab
B. 3ab
C. 3
D. -3a2b
Answer: D
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Find the most general antiderivative.
dt
A. - 
+ C
B. - 
+ C
C. -9sin t + C
D. -9 cos t + C
Express the number in decimal notation.7 × 10-7
A. 0.0000007 B. -700,000 C. 0.00000007 D. 0.000007
Solve the problem.On March 10, Henry rented a van with a full tank of gas and 15,292 miles on the odometer. On March 14, he returned the van with 15,662.4 miles on the odometer. The rental agency charged Henry 
for the rental and needed 10 gallons to fill up the tank. What was the van's rate of gas consumption in miles per gallon? Round to the nearest tenth when necessary.
A. 0 mpg B. 370.4 mpg C. 48.7 mpg D. 37 mpg
Decide whether the equation is conditional, an identity, or a contradiction. Give the solution set.2(x - 5) + (2x) = 4(x - 7) - 2
A. Conditional; {0} B. Identity; {all real numbers} C. Conditional; {-3} D. Contradiction; ?