Solve the problem.A person burns 8.4 calories per minute while walking. How many calories will be burned if the person walks for 2 hours?
A. 168 calories
B. 1008 calories
C. 10,080 calories
D. 16.8 calories
Answer: B
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Write the expression in simplest form. If a radical appears in the denominator, rationalize the denominator.
A. xy
B. xy
C. xyz
D. x
Solve the problem.A banquet dinner is being organized by a club. The actual cost of the dinner is $28 per person. The members are to pay $7 to attend, with the club making up the difference. What percentage of the dinner's cost is the club going to pay?
A. 85% B. 75% C. 70% D. 80%
Perform the indicated operations and simplify. Assume all variables represent positive real numbers.9 
- 2x 
A. 7x 
B. 7x 
C. 9 
- 2x 
D. 11 
Simplify the expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.
? 
A. 64 B. 128 C. 16 D. 8