The parametric equations of four curves are given. Graph each of them, indicating the orientation.C1: x = 7sin t, y = 7 - 7cos2 t; 
? t ? 
C2: x = ln t, y = ln t2; e-4 ? t ? e3C3: x = t2 - 8, y = t - 3; -4 ? t ? 4C4: x = t - 5, y = t + 2; -4 ? t ? 7
What will be an ideal response?
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Mathematics
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Use a double-angle identity to find the exact value of the expression.
A. 
B. 
C. 
D. 
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Find the coordinates of the labeled points.
A. A(4, 6); B(0, -6) B. A(-4, 6); B(0, 6) C. A(4, 6); B(0, 6) D. A(4, -6); B(1, -6)
Mathematics
Perform the operation indicated. Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Answer the question.A retailer finds that total costs per day are given by c = 16
+ 169, where c is cost and n is units sold. What is c when no units are sold?
A. $185 B. $169 C. $208 D. $52
Mathematics