An electric company charges a connection fee of $61 plus $0.19 for each kilowatt-hour of electricity used.
?
A: Write a formula that gives the cost E, in dollars, of connecting and using h kilowatt-hours of electricity.
?
B: Solve the equation you found in part A to express the kilowatt-hours used as a function of the cost E.
?
C: How many kilowatt-hours are used if the total charge (connection plus charge for electricity usage) is $155.67?
What will be an ideal response?
A: 
?
B: 
?
C: 498.26 kilowatt-hours
Mathematics
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Rewrite the fraction in simplest form.
A. 
B. 
C. 
D. 
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Use the equation to identify the slope and the y-intercept of the graph.5x + 7y = 38
A. m = - 
; (0, 
)
B. m = -1
; (0, 
)
C. m = 
; (0, 
)
D. m = 1
; (0, 
)
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Solve the problem.If a rock falls from a height of 80 meters on Earth, the height H (in meters) after x seconds is approximately 
What is the height of the rock when x = 1.4 seconds? Round to the nearest hundredth, if necessary.
A. 73.14 m B. 89.6 m C. 70.59 m D. 70.4 m
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Find the slope of the line determined by the given equation and then sketch the line.3x - 5y = -1
A. slope = 
B. slope = - 
C. slope = 
D. slope = - 
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