Solve.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. 24 watches
B. 49 watches
C. 38 watches
D. 30 watches
Answer: C
Mathematics
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Translate the percent problem to a proportion using x for the unknown value. Do not solve the proportion.What is 37% of 60?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Provide an appropriate response.Evaluate: 
.
A. 5040 B. 105 C. 1 D. 210
Mathematics
Solve. Try factoring first. If factoring is not possible or is difficult, use the quadratic formula.
- 
= 0
A. -2
, 2
B. 2, 2
C. 2, -2
, 2
D. 2
Mathematics
Use Cramer's rule to solve the system.2x + 2y =102x - 2y =6
A. {(4, 1)} B. {(-1, 4)} C. {(1, 4)} D. {(-4, -1)}
Mathematics