Solve the problem.An experienced accountant can balance the books twice as fast as a new accountant. Working together it takes the accountants 6 hours. How long would it take the experienced accountant working alone?
A. 9 hr
B. 12 hr
C. 15 hr
D. 3 hr
Answer: A
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Solve the problem.Some people must eat a low-sodium diet with no more than 2,000 mg of sodium per day. By eating 1 cracker, 1 pretzel, and 1 cookie, a person would ingest 149 mg of sodium. If a person ate 8 pretzels and 8 cookies, he or she would ingest 936 mg of sodium. By eating 6 crackers and 7 pretzels, the person would take in 535 mg of sodium. Which of the following is true?
A. A cracker has 30 mg of sodium. B. A cookie has 71 mg of sodium. C. A pretzel has 49 mg of sodium. D. None of these
Subtract and check the difference.
A. 4395 B. 4397 C. 4315 D. 7397
Determine the domain and range of the function.
A. domain: (-?, 3]; range: (-?, 5] B. domain: (-?, ?); range: (-?, ?) C. domain: (-?, ?); range: (-?, 5] D. domain: (-?, 3) ? (3, ?); range: (-?, 5) ? (5, ?)
Rewrite the original fraction as an equivalent fraction with the given denominator.
= 
A. 
B. 
C. 
D. 