Provide an appropriate response.What are the factors of 42?
A. 1, 7, 6, 42
B. 1, 2, 3, 6, 7, 14, 28, 42
C. 7, 6, 14, 42
D. 1, 2, 3, 6, 7, 14, 21, 42
Answer: D
Mathematics
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Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 20 watches B. 31 watches C. 63 watches D. 39 watches
Mathematics
Evaluate the expression.-
A. 7 B. 8 C. -9 D. -8
Mathematics
Complete.21,120 ft = 
mi
A. 4.5 B. 4 C. 5 D. 105.6
Mathematics
Solve and check.3x + 6 = 21
A. 27 B. 15 C. 5 D. 45
Mathematics