Find the circumference of the circle whose radius or diameter is given. Use 
or 
as indicated. r = 161 cm Use ? ? 
.
A. C ? 1012 cm
B. C ? 253 cm
C. C ? 81,466 cm
D. C ? 506 cm
Answer: A
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Determine if the item described is designed in accordance with the golden ratio.A formal garden has a width of 28.90 meters and a length of 53.75 meters.
A. Yes B. No
Subtract.(0.7x4 - 0.8x3 + 0.9) - (4.6x4 + 2.1x - 1.3)
A. -3.9x4 - 0.8x3 - 2.1x + 2.2 B. -3.9x4 - 0.9x3 - 0.4 C. -3.9x4 - 0.8x3 - 2.1x - 0.4 D. -3.9x4 - 0.8x3 + 2.1x + 2.2
Provide an appropriate response.Explain why the sum of the coefficients in the expansion of 
is zero. Give an example.
What will be an ideal response?
Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 12 feet by 15 feet and the area of the rug is 108 square feet, how wide will the border be?
A. 3 ft B. 2.2 ft C. 1 ft D. 1.5 ft