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 $36.63?
A. 34 minutes
B. 7 minutes
C. 67 minutes
D. 336 minutes
Answer: C
Mathematics
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Simplify. Assume variables represent nonnegative values.
A. 6
B. 7
C. 61
D. 5
Mathematics
Solve the equation by multiplying both sides by the LCD.x = -4 + 
A. {-3, -7}
B. 
C. {-7, 3}
D. 
Mathematics
Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = x5 - 2.7x4 - 18.71x3 + 3x2 + 38.88x - 9.791
A. 3 or 1 positive zeros, 2 or 0 negative zeros B. 2 or 0 positive zeros, 3 or 1 negative zeros C. 3 or 1 positive zeros, 3 or 1 negative zeros D. 2 or 0 positive zeros, 2 or 0 negative zeros
Mathematics
Find the domain of the composite function f ? g.f(x) = 3x + 24; g(x) = x + 6
A. {x 
B. {x 
C. {x 
D. {x 
Mathematics