Use properties of real numbers to calculate the expression mentally.
? 
? 
? 7 ? 
A. 
B. 
C. 
D. 
Answer: C
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An object moves in simple harmonic motion described by the given equation, where t is measured in seconds and d in meters . Find the maximum displacement, the frequency, and the time required for one cycle.d = 2 cos 5?t meters
A. displacement = -2 meters; period = 
seconds; f = 
oscillations/second
B. displacement = 2 meters; period = 
? seconds; f = 
oscillations/second
C. displacement = 2 meters; period = 
seconds; f = 
oscillations/second
D. displacement = 2 meters; period = 
seconds; f = 
oscillations/second
Use a graphing calculator to approximate the real zeros. Give each zero as a decimal to the nearest tenth.f(x) = x3 + x2 - 11x - 11
A. 1, 3.3, -3.3 B. 1, 3.3i, -3.3i C. -1, 3.3, -3.3 D. 1, 5.5, -5.5
Evaluate.240 ÷ 8 - 4
A. 60 B. 236 C. 26 D. 228
Determine whether the graph represents a function.
A. Yes B. No