Find an equation for the circle.Center at (3, 0), radius 9
A. (x - 3)2 + y2 = 81
B. (x + 3)2 + y2 = 81
C. x2 + (y + 3)2 = 9
D. x2 + (y - 3)2 = 9
Answer: A
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Compute the unit binormal vector and torsion of the curve. r(t) = 
A. B(t) = 
, ? = 
B. B(t) = 
, ? = 
C. B(t) = 
, ? = 
D. B(t) = 
, ? = - 
Solve.If 90 gallons of oil flow through a certain pipe in 18 minutes, how long will it take to fill a 600-gallon tank using this pipe?
What will be an ideal response?
Convert the units.819 mg = 
kg
A. 0.000819 kg B. 819,000 kg C. 0.0819 kg D. 81,900 kg
Four boys were playing marbles; their names were Bob, Harry, Iggi, and Alice. One of the boys had 9 marbles, another had 15, and each of the other two had 12. Their ages were 3, 10, 17, and 18, but not respectively. Bob shot before Harry and Alice. Alice was older than the boy with 15 marbles. Harry had fewer than 15 marbles. Alice shot before Harry. Iggi shot after Harry. If Iggi was 10 years old, he did not have 15 marbles. Bob and Alice together had an even number of marbles. The youngest boy was not the one with 15 marbles. If Harry had 12 marbles, he wasn't the youngest. The 10-year-old shot after the 17-year-old. How old was each boy?__________ was 3, __________ was 10, __________ was 17, __________ was 18
What will be an ideal response?