Which of the following sets is an infinite set?

{1, 2, 3 . . 100}

1. empty set
2. the set of whole numbers less than one billion
3. the set of natural numbers
4. none of the above

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

How do i get my dad to stop making me gargle his pickle i want my mom to gargle my pickle not my dads

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.