Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 240 sin (45?t)What is the period and amplitude of the current?
A. period = 
second, amplitude = 45
B. period = 
second, amplitude = 240
C. period = 45? seconds, amplitude = 
D. period = 
second, amplitude = 270
Answer: B
Mathematics
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A. C(3, 4); D(-3, 4) B. C(-6, -3); D(3, -3) C. C(-6, 3); D(-3, 4) D. C(-6, 3); D(4, -3)
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Find a polynomial that represents the area of the figure.
A. 7x15 B. 10x8 C. 7x8 D. 10x15
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Multiply or divide as indicated.
? 
A. 
B. 
C. 
D. 
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The graph of a function is given. Use the graph to find the indicated limit and function value, or state that the limit or function value does not exist.a. 
f(x)
b. f(1)
A. a. 
f(x) = 1
b. f(1) = 1
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f(x) = -3
b. f(1) = -3
C. a. 
f(x) = 3
b. f(1) = 3
D. a. 
f(x) does not exist
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