Three living species x, y, and z share a common ancestor t, as do extinct species u and v. a grouping that consists of species t, x, y, and z (but not u or v) makes up
a. a monophyletic taxon.
b. an ingroup, with species u as the outgroup.
c. a paraphyletic group.
d. a polyphyletic group

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.

answer; /// i believe that the correct answer is (50%);

option c is the correct answer.