Perform the indicated multiplication.(0)(-30)
A. 1
B. 30
C. -30
D. 0
Answer: D
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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. Find the amount of sodium in each.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
Answer the questionIf y varies directly as the square of x, and x is doubled, how is y changed?
A. y is twice as large as before B. y is half as large as before C. y is one-quarter as large as before D. y is four times as large as before
Write the expression as a sum of two logarithms.log3 (9 ? 81)
A. log3 9 + log3 81 B. log3 9 + log3 81 + log3 3 C. log9 3 + log81 3 D. log3 2 + log3 4
Solve the problem.To remodel a bathroom, a contractor charges $30 per hour plus material costs, which amount to $4680. Therefore, the total cost to remodel the bathroom is given by 
where x is the number of hours the contractor works. Find 
What does 
compute?
A. f -1(x) = 
- 4680; This computes the number of hours worked if the total cost is x dollars.
B. f -1(x) = 
- 4680; This computes the total cost if the contractor works x hours.
C. f -1(x) = 
- 156; This computes the number of hours worked if the total cost is x dollars.
D. f -1(x) = 
- 156; This computes the total cost if the contractor works x hours.