In the given scenario, which of the following statements is the dependent variable?

Johanna cooked 5 sunny side-up eggs for her family of 5 members.

In the given scenario, which of the following statements is the independent variable?

Johanna cooked 5 sunny side-up eggs for her family of 5 members.

Johanna cooked 5 sunny side-up eggs for her family of 5 members. If she cooked 8 sunny side-up eggs, how many family members are there?

A high school had 2,000 students enrolled in 2015 and 3000 students in 2017. If the student population S grows as a linear function of time t, where t is the number of years after 2015, what is the linear function?

In the given problem in item #4, what will be the number of students in 2020?