Solve the problem.An electric company has the following rate schedule for electricity usage in single-family residences:Monthly service charge $4.93Per kilowatt service charge1st 300 kilowatts$0.11589/kWOver 300 kilowatts$0.13321/kWWhat is the charge for using 300 kilowatts in one month?What is the charge for using 375 kilowatts in one month?Construct a function that gives the monthly charge C for x kilowatts of electricity.
What will be an ideal response?
$39.70
$49.69
C(x) = 
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Determine whether the study involves selection bias, participation bias, both selection bias and participation bias, or neither.You are interested in the percentage of people in your city who favor tax cuts. You interview every twentieth person as they leave the church in your neighborhood.
A. Participation bias and selection bias B. Selection bias C. No bias D. Participation bias
Subtract the polynomials. Express your answer in standard form.12x4 + 8x3 
A. -7x4 + 6x3 B. 31x4 + 10x3 C. 31x4 + 6x3 D. -7x4 + 10x3
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
Solve the equation. Round decimal answers to the nearest thousandth.3(5x - 1) = 12
A. 0.252 B. 0.477 C. 1.000 D. 0.652