Solve the equation.6x + 6 + 4(x + 1) = 4x + 7
A. {4}
B. 
C. 
D. 
Answer: C
Mathematics
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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. 87 watches B. 20 watches C. 43 watches D. 50 watches
Mathematics
Use L'Hospital's rule to find the limit.
A. 12 B. 1 C. ? D. 0
Mathematics
Solve by using the Superposition Theorem:
R1 = 4.7 Kê, R2 = 3.3 Kê, R3 = 5.1 Kê, E1 = 40 V, and E2 = 20 V. Find I1.
a. 0.231 mA
b. 1.222 mA
c. 2.271 mA
d. 4.148 mA
e. 6.419 mA
Mathematics
Multiply. Assume that no radicands were formed by raising negative numbers to even powers.
(9
- 
)
A. 8 
B. 9 
- 2
C. 9 
- 2 
D. 9 
- 2
Mathematics