Solve the problem.How many 4-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, if repeated digits are allowed and the first digit may not be a 0?

A. 256
B. 8999
C. 9000
D. 10,000


Answer: C

Mathematics

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A. -7
B. 7 + x
C.
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Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) ? 0

A. x ? 3 B. x ? 3 C. All real numbers D. No solutions

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The given pattern continues. Write down the nth term of the sequence {an} suggested by the pattern.1, , ...

A. an = 
B. an = 
C. an = 
D. an = 

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Convert to a logarithmic equation.1/2 = 

A.  = log1/2 
B.  = log1/6 
C.  = log1/6 
D.  = log1/36 

Mathematics