Evaluate the logarithm without using a calculator.log7 
A. -2
B. 7
C. 2
D. -7
Answer: A
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Use the pH scale to answer the question.What is the pH of a solution with a hydrogen ion concentration of 0.01 mole per liter? Is this solution an acid or a base?
A. pH = 7; neutral B. pH = 8; base C. pH = 3; acid D. pH = 2; acid
Solve the problem.Express cos(A + B + C) in terms of sin A, sin B, sin C, cos A, cos B, and cos C.
A. sin A cos B cos C + sin B cos A cos C + sin C cos A cos B - sin A sin B sin C B. cos A cos B cos C - sin A sin B cos C - sin A sin C cos B - sin B sin C cos A C. sin A cos B cos C + sin B cos A cos C + sin C cos A cos B + sin A sin B sin C D. sin A cos B cos C + sin B cos A cos C - sin C cos A cos B + sin A sin B sin C
Find the perimeter of the figure.Parallelogram
A. 10.4 m B. 20.8 m C. 18.8 m D. 12.4 m
Simplify the complex fraction.
A. 
B. 
C. 
D. 