SOLUTION: an electric utility company charges residential customers 11,5 cents per kilo-watt hour plus a base charge each month.1 customer's monthly bill comes to $51,65 for 380 kilowatt hou

Question 1027656: an electric utility company charges residential customers 11,5 cents per kilo-watt hour plus a base charge each month.1 customer's monthly bill comes to $51,65 for 380 kilowatt hours.Find a linear function that describes the total monthly charges for electricity if x is the number of kilowatt hours used in a month ?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Plot monthly charges, , in cents, on the vertical axis
Plot number of kilowatt hours used per month,
on the horizontal axis
----------------------
cents / kWh is the slope of the line
----------------------
( 380, 5165 ) is given as a point on the line
( note that I converted the cost to cents )
----------------------
Use the general point-slope formula

---------------------
check the answer:
( 380, 5165 )

OK
( note that if no electricity is used, you still pay $7.95/month )

RELATED QUESTIONS
An electric utility company determines the monthly bill for a residential customer by... (answered by ikleyn,greenestamps)

Florida Power & Light Company supplies electricity to residential customers for a monthly (answered by ikleyn)

The electric company in Hillsburg, Massachusetts charges its customers a flat fee of... (answered by macston)

An electrical company supplies electricity to residential customers for a monthly... (answered by jorel1380)

Residential customers who heat their home with natural gas have their monthly bills... (answered by Theo)

An electrical company used the following method for computing consumers bill or monthly... (answered by The Troll Kid)

You will be traveling abroad and trying to decide which cell phone company is the best... (answered by stanbon)

ABC phone company charges $24 per month plus 3 cents per minute of phone calls. XYZ phone (answered by fcabanski)

How would you write an equation that relates the monthly charge c, in dollars, to the... (answered by ankor@dixie-net.com)