Solve by completing the square.n2 = 8n - 15
A. 5
B. 5, 3
C. -5, -3
D. no real-number solution
Answer: B
Mathematics
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Evaluate the expression.
A. 2
B. -12
C. -64
D. 
E. 
Mathematics
Use scientific notation and the properties of exponents to help you perform the following operation. Express the answer in ordinary decimal notation.(0.006)(110,000)
A. 6600 B. 660 C. 11.6 D. 7100 E. 710
Mathematics
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 20 watches B. 36 watches C. 73 watches D. 39 watches
Mathematics
Evaluate.-40
A. -1 B. 0 C. 1 D. -4
Mathematics