Use a proportion to solve the problem.On a map, the length of a nature-center trail is 6.4 centimeters. If the scale is 2 centimeters to 20 kilometers, what is the actual length of the trail?
A. 65 km
B. 68 km
C. 128 km
D. 64 km
Answer: D
Mathematics
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Identify the equation as representing either a circle, a parabola, an ellipse, or a hyperbola.-x + 9y + 6xy = 11
A. Circle B. Ellipse C. Hyperbola D. Parabola
Mathematics
Solve the inequality. Graph the solution set and write it in interval notation.5x - 6 > 4x - 5
A. [1, ?)
B. (1, ?)
C. (-?, 1)
D. (-11, ?)
Mathematics
Write the following as an algebraic expression. Simplify if possible.Subtract 3x - 3 from 7x + 1.
A. 4x - 4 B. 10x - 2 C. 4x + 4 D. -4x - 4
Mathematics
Solve the problem.The logistic growth model 
represents the population of a species introduced into a new territory after t years. What will the population be in 20 years?
A. 123 B. 250 C. 244 D. 135
Mathematics