Solve the problem.The total length of a boat race is 
of a mile. Kira has completed 
of a mile. How much does she have left to complete?
A. 
mi
B. 
mi
C. 
mi
D. 
mi
Answer: D
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Solve the problem.Use the table to find the APR to the nearest whole percent. Assume that all interest rates are annual rates.
Amanda has agreed to pay off a $4100 loan by making 12 monthly payments. The total finance charge on her loan is $328.
A. 15% B. 12% C. 14% D. 13%
Determine the vertex, focus, and directrix of the parabola and sketch its graph.(y + 4)2 = 12(x - 2)
A. vertex: (-2, 4)
focus: (1, 4)
directrix: x = -5
B. vertex: (-4, 2)
focus: (-1, 2)
directrix: x = -7
C. vertex: (2, -4)
focus: (-1, -4)
directrix: x = 5
D. vertex: (2, -4)
focus: (5, -4)
directrix: x = -1
Let’s suppose 2.5 mg of glactosyl human serum (Tc-GSA) is injected into the bloodstream. Let B and L be the amount of Tc-GSA in the blood and liver, respectively. The quantities B and L are related by:
4 = B + L dB / dt = -0.06B + 0.03L and dL /dt = 0.06B - 0.03L At equilibrium, the quantities B and L are constant. Find the equilibrium amount of Tc-GSA in the blood and liver.
Solve.
= 
A. 141.68 B. 26 C. 5.322 D. 515.841