The triangles are similar. Find the missing length x and the missing angles A, B, C. 
A. x = 21 units; A = 41°; B = 97°; C = 42°
B. x = 7 units; A = 97°; B = 41°; C = 42°
C. x = 7 units; A = 42°; B = 41°; C = 97°
D. x = 21 units; A = 97°; B = 41°; C = 42°
Answer: B
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Solve.While looking through the properties of her 3 - 1/2 inch diskette, Amy noticed that 
of the space on the disk was not being used. She deleted four files that were using 
of the disk space. What fractional part of the disk space was free after she deleted the four files?
A. 
of the disk was free
B. 
of the disk was free
C. 
of the disk was free
D. 
of the disk was free
Write the standard form of the equation of the circle with radius r and center (h, k).r = 
; (h, k) = (0, 8)
A. (x - 8)2 + y2 = 121 B. (x + 8)2 + y2 = 121 C. x2 + (y - 8)2 = 11 D. x2 + (y + 8)2 = 11
Graph the function over a one-period interval.y = cos 
+ 
A. 
B. 
C. 
D. 
Solve the triangle, if possible. If the triangle represents the ambiguous case, solve for all possible triangles. Approximate values to the nearest tenth when appropriate.
A. ? = 97°, a = 12.4, b = 21.9 B. ? = 103°, a = 12.6, b = 22.3 C. ? = 103°, a = 62.2, b = 35.1 D. ? = 103°, a = 22.3, b = 12.6