Question 145096
1.Radisson Electric Company’s monthly bill includes a basic customer charge of $12.00, and a usage charge of $0.07 for each kilowatt hour of electricity supplied. 
- Write an equation that can be used to determine the monthly bill, given the number of kilowatt hours h supplied.
Equation: charge(h) = 0.07h + 12
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-Determine the electric bill if 1850 kilowatt hours of electricity are supplied.
c(1850)= 0.07*1850 + 12 = $141.50
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2. Consider the points (4, –1) and (7, 8). 
(a) Find the midpoint of the line segment with the given endpoints.
x-coordinate: (4+7)/2 = 11/2
y-coordinate: (8-1)/2 = 7/2
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(b) Find the distance between the points. Give an exact answer and also an approximation to three decimal places. Show some work.
d = sqrt[(8--1)^2 + (7-4)^2] = sqrt[81 + 36] =sqrt(217)
d is approximately 14.7309...
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Cheers,
Stan H.