Is 8/12 and 4/6 equivalent or not​

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Which function has the domain x> -11?