2.

Identify the independent and dependent variables in the situation.

The amount of electricity used for air conditioning in homes increases as the temperature increases.
a.
Independent: temperature; Dependent: amount of electricity used
b.
Independent: amount of electricity used; Dependent: temperature

3.

Identify the independent and dependent variables in the situation.

As Kyoko works more hours, her total pay increases.
a.
Independent: hours worked; Dependent: total pay
b.
Independent: total pay; Dependent: hours worked