Solve the problem.If f(x) = x2 - 5x, find f(3x + 6).
A. 9x2 - 15x + 6
B. 9x2 + 21x + 42
C. 9x2 + 21x + 6
D. 9x2 + 36x + 31
Answer: C
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Find the domain and range of the inverse of the given function.f(x) = 3.9 - 2.25x
A. Domain: all real numbers; range: [3.9, ?) B. Domain and range: all real numbers C. Domain: all real numbers; range: (?, 3.9] D. Domain: [3.9, ?); range: all real numbers
Use the order of operations to simplify the expression.-|-11| - |-14 - 11|
A. 14 B. -14 C. 36 D. -36
Solve the problem.A power outage affected all homes and businesses within a 12 mi radius of the power station. If the power station is located 10 mi north of the center of town, find an equation of the circle consisting of the furthest points from the station affected by the power outage.
A. x2 + y2 = 144 B. x2 + (y - 10)2 = 12 C. x2 + (y + 10)2 = 144 D. x2 + (y - 10)2 = 144
Convert to a logarithmic equation.e-2 = t
A. ln t = -2 B. log-2t = e C. ln (-2) = t D. log-2e = t