Solve the problem.A cellular phone company determines a monthly bill from the x number of minutes of usage. The amount of the bill, B(x), (in dollars) is given by the function: 
How many minutes did Marv use his phone during the month of July if his bill was $39.35?
A. 9 minutes
B. 67 minutes
C. 35 minutes
D. 251 minutes
Answer: B
Mathematics
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Provide an appropriate response.The inequality1- 
< 
< 1holds when x is measured in radians and 
< 1. Find
if it exists.
A. 0.0007 B. 1 C. 0 D. Does not exist
Mathematics
Graph the equation by plotting intercepts.4x + 5y = 20
A. 
B. 
C. 
D. 
Mathematics
Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x - z = -5y + z = 1x + z = 2
A. {(-5, 1, 0)}
B. 
C. 
D. {(-3, -5, 7)}
Mathematics
Graph the function.y = 
cot 3x
A. 
B. 
C. 
D. 
Mathematics