Your utility company charges 13 cents per kilowatt-hour of electricity. what is the daily cost of keeping lit a 75 watt light bulb for 12 hours each day? how much will you save in a year if you replace the bulb with an led bulb that provides the same amount of light using only 15 watts of power?

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

the answer to your question a or b but i am pretty sure it is b. i hope this : )

step-by-step explanation: