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 repetitions of digits are allowed?
A. 8999
B. 256
C. 10,000
D. 9000
Answer: D
Mathematics
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Solve the problem.Sheryl's mean average on eight exams is 93.125. Find the sum of her scores.
A. 768 B. 745 C. 845 D. 761
Mathematics
State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = 
A. No; it is a ratio of polynomials B. Yes; degree -2 C. Yes; degree 5 D. Yes; degree 2
Mathematics
Simplify the expression, writing the answer as a single term without negative exponents.
A. -12b + 42a
B. 42b - 12a
C. 
D. 
Mathematics
Solve the problem.The distance from the downtown station to the last stop on a commuter railroad line is 6 miles. The distance between stops is about 1.0 miles. How many stops are there?
A. 3 stops B. 7 stops C. 6 stops D. 5 stops
Mathematics