Determine the amplitude or period as requested.Period of y = 3 cos 
x
A. 
B. 3
C. 4?
D. 
Answer: C
Mathematics
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Simplify.18(20 - 5 ? 3)2 ÷ (2 ? 9)
A. 5 B. 2025 C. 25 D. 45
Mathematics
State the phrase as a mathematical expression. Use x to represent the variable.The difference between twelve times a number and twelve
A. 12 - x + 12 B. 12 - 12x C. 12 + 12x D. 12x - 12
Mathematics
Find the domain of the function.f(x) = 
A. (-?, ?) B. (-?, -5) ? (-5, ?) C. (-?, -5) ? (-5, 1) ? (1, ?) D. (-?, 1) ? (1, ?)
Mathematics
Find the nth term an of the geometric sequence.an = 
; 3000, 300, 30, . . . .
A. n = 6 B. n = 11 C. n = 7 D. n = 9
Mathematics