A student wants to do an experiment to determine how watering affects plant growth. She plants three plants of the same species and size in pots using the same soil and grows them at the same temperature. She waters the first plant once a day, the second plant twice a day, and the third plant three times a day. In this experiment, what is the dependent variable

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

hello there the answer is d

answer: that would be cheating

explanation: