Solve.logx 49 = 2
A. 
B. 7
C. -7
D. 128
Answer: B
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Solve the problem.Consider an election in which the votes were cast as follows. How many of Burnaby's votes would Costello need to win the runoff election?
A. 125 B. 68 C. 63 D. 126
Calculate the circulation of the field F around the closed curve C.F = xy2i + x2yj; curve C is the counterclockwise path around C1 ? C2 : C1: 
0 ? t ? ?C2: r(t) = ti , -8 ? t ? 8
A. 64 B. 128 C. 8 D. 0
Which of the following is a reason for having students do writing exercises in mathematics?
a. To improve students' mathematical understanding b. To elicit students' attitudes about mathematics c. To encourage metacognitive activity d. All of the above e. None of the above
Solve by using the Superposition Theorem:
R1 = 10 Kê, R2 = 5 Kê, R3 = 20 Kê, R4 = 15 Kê, E1 = 30 V, and E2 = 45 V. Find the value of I3.
a. 0.54 mA
b. 1.91 mA
c. 0.28 mA
d. 0.82 mA
e. 1.36 mA