Simplify by rationalizing the denominator.
A. -1
B. -22
C. 
D. 
Answer: D
Mathematics
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Factor the expression completely.18s2 + 60s + 48 (electricity)
A. (18s + 24)(s + 2) B. (3s + 4)(6s + 12) C. 6(3s2 + 10s + 8) D. 6(3s + 4)(s + 2)
Mathematics
Solve.
+ 
= 
A. -2, 
B. no solution
C. - 
D. 
Mathematics
Provide an appropriate response.Evaluate 
A. 
B. 
C. 
D. 
Mathematics
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 should he repair to produce the lowest cost?
A. 244 watches B. 42 watches C. 168 watches D. 61 watches
Mathematics