Determine the amplitude and range of the function and sketch its graph.y = 4 cos 3?x
A. amplitude: 4; range: [0, 4]
B. amplitude: 3?; range: (-?, ?)
C. amplitude: 4; range: [-4, 4]
D. amplitude: 4; range: [-4, 4]
Answer: C
Mathematics
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Graph on a number line.-4.17
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Let f(x) be the function represented by the dashed line and g(x) be the function represented by the solid line. Solve the equation f(x) ? g(x).
A. x ? -2 B. x < -2 C. x ? 1 D. x ? 1
Mathematics
Write the expression in the standard form a + bi.
A. 
+ 
i
B. 
- 
i
C. 
+ 
i
D. 
- 
i
Mathematics
Find the product and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics