Use a graphing calculator to graph the piecewise-defined function, using the window indicated.f(x) = 
; window [-5, 5] by [-10, 2]
A. 
B. 
C. 
D. 
Answer: D
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Convert 33 kilometers per hour to miles per hour.
What will be an ideal response?
Use a graphing utility to solve the equation.
= 6
A. 4 B. -34 or 34 C. 34 D. -34
Find the amount of sales tax or tax rate and the total cost. Round money answers to the nearest cent if necessary.Amount of sale: $410 Amount of tax: $10.25
A. 2.5%, $420.25 B. 3.5%, $420.25 C. 4.5%, $420.25 D. 0.25%, $420.25
Solve the problem.Suppose there are two low-frequency sound waves with similar frequencies. Let 
and 
model the two tones where t is time measured in seconds. Write the sum 
as a product of two trigonometric functions, and determine the frequency of the beats.
A. 3 beats per second 0.004 cos (93?t) cos (3?t) B. 1.5 beats per second 0.004 cos (46.5?t) cos(1.5?t) C. no beats 0.004 cos (46.5?t) cos (46.5?t) D. no beats 0.004 cos (93?t) cos (93?t)