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. 30 watches
B. 26 watches
C. 34 watches
D. 68 watches
Answer: B
Mathematics
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Solve the problem.Given that 
= 
,evaluate 
A. 
B. 
C. 
D. 
Mathematics
Determine whether the terms are like or unlike.15b and 15
A. like B. unlike
Mathematics
Find the product.(x + 2)[x - (1 + 7i)][x - (1 - 7i)]
A. x3 + 2x2 + 50x + 100 B. x3 - 46x2 + 96 C. x3 + 46x + 100 D. x3 + 100
Mathematics
Find the mean for the sequence of numbers.9, 1, 6, 7, 12
A. 8.75 B. 8 C. 36 D. 7
Mathematics