Solve the problem.A salesperson gets a commission of $400 for the first $10,000 of sales, and then $200 for each additional $10,000 or partial of sales. Let S(x) represent the commission on x dollars of sales. Find the value of 

A. $1700
B. $1900
C. 2100
D. $2000

Answer: D

Mathematics

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Find the domain and range of the function.f(x) = 5 - x2

A. D: (-?, ?), R: (-?, 5] B. D: (-?, ?), R: [5, ?) C. D: (-?, ?), R: (-?, ?) D. D: (-?, 5], R: (-?, ?)

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Answer the question.f(x) = Is f continuous at x = 0?

A. Yes B. No

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Solve the problem. Write the answer in lowest terms and as a whole or mixed number where possible.A rectangular parking lot measures  mile by  mile. Find the area of the parking lot.

A.  mi2
B.  mi2
C.  mi2
D.  mi2

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Convert to decimal notation.7.73 × 10-4

A. -773,000 B. 0.0000773 C. 0.00773 D. 0.000773

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Mathematics