3. Your monthly electric bill is proportional to the number of kilowatt-hours (kwh) of energy used at a rate of 5.7 cents per kwh. Complete parts (a) through (c). (a) Fill in the following table. Energy (kwh) Cost ($) 0 300 600 900 (Type integers or decimals rounded to the nearest hundredth as needed. Do not include the $ symbol in your answers.) (b) Represent the relationship between cost ($), C, and energy used (kwh), E, with an equation. C = . E (Type an integer or a decimal. Do not include the $ symbol in your answer.) (c) What is the graph of the equation that represents the relationship between cost ($), C, and energy used (kwh), E? O A. OB. O c. OD. 100-7 100- 100- 100- Cost ($) 50- Cost ($) 50 Cost ($) 50-7 Cost ($) 50-7 0+ 500 1000 500 1000 0 500 1000 0 500 1000 Energy (kwh) Energy (kwh) Energy (kwh) Energy (kwh)