Write an equivalent expression without a negative exponent.x2y-4
A. 
B. 
C. 
D. -4x2y
Answer: C
Mathematics
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Solve the problem.The loudness of a sound can be approximated by the formula d = 10 log 
where d is the number of decibels. The higher the value of d, the louder the sound. Find the number of decibels when I = 10,000 and I0 = 1.
A. 10,000 B. 14 C. 10 D. 40
Mathematics
Use the rules of exponents to simplify the expression. Use positive exponents to write the answer.(-3x-4y-6)2
A. 
B. - 
C. 9x8y12
D. 
Mathematics
Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) ? 0
A. x ? 2 or x ? 5 B. 2 ? x ? 5 C. no solution D. x ? 2
Mathematics
Solve.In a surveyed area, 25.1% of the residents signed up for the local park district pool pass. Write this percent as a decimal.
A. 25.1 B. 0.0251 C. 2.51 D. 0.251
Mathematics