for a residential customers in Pleasanton,California, during june 200, pacific gas and electric company determined the cost of electricity used according to the following: baseline usage of 379.5 kwh costs $47.76 and each additional kilowatt hour up to 113.9 kwh costs $0.14321.
a) write a linear equation to determine the cost (C0 for electricity usage of (K) kwh above the baseline quantity to the additional 113.9 kwh.
b) if a home used 426 kwh in a month , what was the charge for electricity usage?
c)if the electricity costs for a month were$58.75, how many kwh above the basline were used?

Question

for a residential customers in Pleasanton,California, during june 200, pacific gas and electric company determined the cost of electricity used according to the following: baseline usage of 379.5 kwh costs $47.76 and each additional kilowatt hour up to 113.9  kwh costs $0.14321.
a) write a linear equation to determine the cost (C0 for electricity usage of (K) kwh above the baseline quantity to the additional 113.9 kwh.
b) if a home used 426 kwh in a month , what was the charge for electricity usage?
c)if the electricity costs for a month were$58.75, how many kwh above the basline were used?