Solve the problem.The voltage E in an electrical circuit is given by E = 3.3 cos 180?t, where t is time measured in seconds. Find the amplitude.
A. 180
B. 180?
C. 3.3
D. 6.6
Answer: C
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Solve the equation 
for y. Round your answers to two decimal places, if necessary.
?
A. 
or 
B. 
or 
C. 
or 
D. None of the above.
Use unit ratios or conversion factors to change to the units indicated. Round to the nearest tenth, if necessary.198 lb to kilograms
A. 435.6 kg B. 89.1 kg C. 502.9 kg D. 209.9 kg
The following question refers to a country with five states. There are 250 seats in the legislature, and the populations of the states are given in the table below.
Under Webster's method, the apportionments to each state are
A. State A: 6; State B: 22; State C: 118; State D: 96; State E: 8. B. State A: 7; State B: 22; State C: 117; State D: 95; State E: 9. C. State A: 6; State B: 22; State C: 117; State D: 96; State E: 9. D. State A: 6; State B: 23; State C: 116; State D: 96; State E: 9. E. none of these
Evaluate using integration by parts.
A. 
B. 
C. 
D. 