Me will give 20 points
which of the sets of ordered pairs represents a function?

a = {(−5, 5), (−2, 2), (2, −2), (5, −5)}

b = {(4, 2), (3, −2), (9, 4), (11, −3)}

only a
only b
both a and b
neither a nor b

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?