Is cell wall an animal cell plant cell or both

Plant cells have a cell wall, as well as a cell membrane.

Explanation:

In plants, the cell wall surrounds a cell membrane. This gives the plant cell its unique or rectangular shape. animal cells simply have a cell membrane, but no cell wall.

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.