Determine the amplitude or period as requested.Amplitude of y = -3 cos 
x
A. 3
B. 8?
C. 
D. 
Answer: A
Mathematics
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Evaluate without using a calculator by using ratios in a reference triangle.sin 
A. - 
B. 
C. - 
D. 
Mathematics
Use a graphing utility to graph the equation.r = 
A. 
B. 
C. 
D. 
Mathematics
Determine the difference quotient 
(h ? 0) for the function f. Simplify completely.f(x) = 8x2 + 5x - 5
A. 16xh + 5h + 5h2 B. 8x + 6 + 16h C. 16x + 5 D. 16x + 5 + 8h
Mathematics
Classify the polynomial as a perfect square trinomial, a difference of squares, or neither.25x2 - 40x + 16
A. Neither B. Difference of squares C. Perfect square trinomial
Mathematics