Solve.David recently switched to a long distance phone company which charges a monthly fee of $5.45 plus $0.06 per minute. A linear function that expresses the monthly bill B as a function of minutes used m is 
What are the independent and dependent variables?
A. The independent variable is the customer, and the dependent variable is B.
B. The independent variable is B, and the dependent variable is m.
C. The independent variable is 5.45, and the dependent variable is 0.06.
D. The independent variable is m, and the dependent variable is B.
Answer: D
Mathematics
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For the pair of functions, find the indicated composition.f(x) = 
x, g(x) = - 
xFind (f ? g)(x).
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Find the solution set for the equation.
= 10
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Mathematics