Solve the problem.A gas company has the following rate schedule for natural gas usage in single-family residences:Monthly service charge$8.80Per therm service charge1st 25 therms$0.6686/thermOver 25 therms$0.85870/thermWhat is the charge for using 25 therms in one month?What is the charge for using 45 therms in one month?Construct a function that gives the monthly charge C for x therms of gas.
What will be an ideal response?
$25.52
$42.69
C(x) = 
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Find the eccentricity of the ellipse.Find the eccentricity of an ellipse centered at the origin having a focus of (0, 
) and corresponding directrix y = 
A. 
B. 
C. 
D. 
Use the vertical line test to determine whether the graph represents a function.
A. not a function B. function
Some bank robbers leave town, speeding at 24 mph. 25 minutes later, the police give chase, traveling at 34 mph. How long (in hours) will it take the police to overtake the robbers? ? Please enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
The graph of a certain function y = f(x) and the zero of that function is given. Using this graph, find a) the x-intercept of the graph of y = f(x) and b) the solution to the equation f(x) = 0.
A. a. -5 b. x = -5 B. a. 0 b. x = 5 C. a. 5 b. x = 0 D. a. 5 b. x = 5