Solve.
+ 
= 
A. No solution
B. 0, 3
C. -3
D. 0
Answer: A
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Solve the problem.Suppose your job is to take phone orders for automotive parts. Use the table below to answer the following questions. Write the correct part number that matches what you hear the customer say on the phone. 
"Can you rush me the 8-thousandth inch size?"
A. B B. A C. I D. G
User row operations to change the matrix to reduced form.
A. 
B. 
C. 
D. 
Simplify. Assume all variables are non-negative real numbers.
A. 3xy
B. 6xy
C. 6xy
D. 6xy
Use the vertex to solve the application problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is the cost in dollars, and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 87 watches B. 28 watches C. 40 watches D. 43 watches