Express the number in decimal notation.8.1 × 105
A. 81,000
B. 8,100,000
C. 405
D. 810,000
Answer: D
Mathematics
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Simplify the expression.(-3)-2
A. 
B. - 
C. -9
D. 9
Mathematics
Divide. Leave your answer in exponent form. Assume that all variables in any denominator are nonzero.
A. 56mn2 B. 8n2 C. 8m35n10 D. 8mn2
Mathematics
Solve the problem.In how many ways can you answer the questions on an exam that consists of 5 multiple choice questions, each of which has 4 answer choices, followed by 5 true-false questions?
A. 615,873 B. 20,318 C. 157,598 D. 32,768
Mathematics
Provide an appropriate response.Sonja wants to save 
of her weekly salary of $540. In this example, 
represents:
A. portion B. rate C. base D. a fraction, so it cannot equal anything
Mathematics